cerium(iv) nitrate, 1.0n 99.soln.
CERIC NITRATE
CAS: 13093-17-9
Molecular Formula: CeN6O18-2
cerium(iv) nitrate, 1.0n 99.soln. - Names and Identifiers
cerium(iv) nitrate, 1.0n 99.soln. - Physico-chemical Properties
| Molecular Formula | CeN6O18-2 |
| Molar Mass | 512.15 |
| Density | 1.426[at 20℃] |
| Boling Point | 63.9℃[at 101 325 Pa] |
| Water Solubility | 1122g/L at 23℃ |
| Vapor Presure | 0Pa at 20℃ |
| Use | Overview cerium nitrate is a chemical substance, combustion, irritant, colorless or light red triclinic crystals deliquescence, toxic, can react with alkali. Melting point 150 °c (loss of 3 molecules of crystal water). Very soluble in water, soluble in ethanol, acid, acetone. Drying with sulfuric acid can lose the water of crystallization, weathering can make it lose two half molecules of crystal water; 200 deg C that is decomposed into cerium oxide, can react with the alkali. Purposes: can be used for the separation of cerium and other rare earth metals, phosphoric acid ester hydrolysis as a catalyst for spectral analysis of reagents, lanthanum, praseodymium, neodymium determination; Oxidants, catalysts, pharmaceuticals and the manufacture of gas lamp material. |
cerium(iv) nitrate, 1.0n 99.soln. - Risk and Safety
| TSCA | Yes |
cerium(iv) nitrate, 1.0n 99.soln. - Physiological Effects of cerium nitrate on rice seed germination
from VIP
Author:
Zhao Chengzhang , Yang changden , Wu Lianbin
Abstract:
The rice seed was soaked in Ce(NO3)3 solution with concentrations from 2.5~30 mg/L for 48 h. Results showed that the germination of seed and the root growth was promoted and chlorophyll contents in the seedling increased. It probably was the soaked seeds increased absorption water rate, membrane pe
Key words:
rice Ce(NO3)3 germination physiological effect
DOI:
10.3321/j.issn:0496-3490.2000.01.017
cited:
year:
2000
Last Update：2024-01-02 23:10:35
cerium(iv) nitrate, 1.0n 99.soln. - Effects of cerium nitrate on cell culture and Taxol synthesis of Taxus chinensis
from Wanfang
Author:
Abstract:
The effects of rare earth on biomass accumulation and Taxol synthesis and release in cell culture of Taxus chinensis were studied by electron microscopy and polyacrylamide gel electrophoresis, at the same time, the mechanism of rare earth regulating secondary metabolism was further discussed. The results showed that the appropriate amount of rare earth could promote the synthesis of Taxol, and had a certain effect on the enzyme system and Ultrastructure of cells.
Key words:
Rare Earth Cell Culture paclitaxel secondary metabolism regulation
DOI:
CNKI:SUN:XTZZ.0.2000-02-013
cited:
year:
2000
Last Update：2023-08-16 22:05:47
cerium(iv) nitrate, 1.0n 99.soln. - Effect of cerium nitrate on calmodulin and Ca ^ 2-ATPase gene expression
from Wanfang
Author:
Yang Weidong , Liu Jiesheng , Wang boat , Lei Hengyi , Yang Yansheng
Abstract:
The effect of cerium nitrate on the expression of CaM Ⅰ and PMCA1b genes in rat liver was studied by reverse transcription polymerase chain reaction. Intraperitoneal injection of high and low concentrations of cerium nitrate did not cause changes in CaM Ⅰ, PMCA1b gene expression, suggesting that the effect of cerium nitrate on calmodulin and Ca2-ATPase may only be at the post-transcriptional level.
Key words:
Rare Earth cerium nitrate calmodulin Ca2-ATPase reverse transcription polymerase chain reaction
DOI:
10.3321/j.issn:1000-4343.2001.01.018
cited:
year:
2001
Last Update：2023-08-16 22:05:47
cerium(iv) nitrate, 1.0n 99.soln. - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Overview | Cerium nitrate is a chemical substance, supporting combustion, irritating, colorless or light red triclinic crystals are easy to deliquesce, toxic, and can react with alkali. melting point 150 ℃ (loss of 3 molecules of crystal water). Easily soluble in water, soluble in ethanol, acid, acetone. Drying with sulfuric acid can lose crystal water, and weathering can make it lose two half molecules of crystal water; it is decomposed into cerium dioxide at 200 ℃, which can react with alkali. Uses: It can be used to separate cerium and other rare earth metals, as a catalyst for phosphate hydrolysis, as a spectral analysis reagent, determination of lanthanum, praseodymium, and neodymium; oxidants, catalysts, medicines and raw materials for manufacturing gas gauze covers. |
| Preparation | Preparation method: React cerium sulfate with barium nitrate, or react with cerium oxide or cerium oxalate with nitric acid, and add hydrogen peroxide as a reducing agent. (1) preparation of high purity and clean cerium nitrate: the optimized process conditions are as follows: nitric acid is used to adjust and control the acidity of cerium nitrate solution to pH 1, heating and concentrating to make the temperature of the solution 115 ℃, then aging for 1 h, stirring, cooling and crystallization at room temperature; After crystallization is complete, stand, filter and wash, the preparation of ultra-low impurity, high purity and clean cerium nitrate product was completed. the contents of impurities Fe2O3, Al2O3, NiO, ZnO, CuO and PbO were all less than 0. 5 × 10-6. At the same time, under the condition of ensuring the product quality, the recycling of crystallization mother liquor is realized. The process has the characteristics of simple preparation method, low cost, stable yield, good product quality, no environmental pollution, etc., and has broad application prospects. Figure 1 TEM diagram of clean cerium nitrate crystal |
| effect of cerium nitrate additive on metal | (1) hong shangkun et al. studied the effect of cerium nitrate additive on the characteristics of micro-arc oxidation ceramic membrane of 7075 aluminum alloy. adding cerium nitrate to phosphating solution will change the initial potential between aluminum alloy matrix and phosphating solution liquid-solid interface, thus affecting the whole phosphating process. Phosphating film formation is easy, and the film formation speed is accelerated, and the completion time of phosphating is shortened. Cerium nitrate plays a phosphating nucleation role in the phosphating process of aluminum alloy, and the phosphating crystallization is refined and uniform. The main composition of the phosphating film is Zn3(PO4)2 • 4H2O and Zn2Fe(PO4)2 • 4H2O. Cerium nitrate does not constitute the composition of the phosphating film. (2) in order to further improve the surface wear resistance of 7075 aluminum alloy, Zhang Shenglin et al. studied the effect of cerium nitrate on the phosphating process of 6061 aluminum alloy. cerium nitrate additives with different mass concentrations were added into the composite electrolyte of sodium silicate and sodium hexametaphosphate, and alumina ceramic films were grown on the surface in situ by micro-arc oxidation technology. The effects of cerium nitrate additives on the thickness, microhardness, surface morphology, phase composition and wear resistance of ceramic films were studied by coating thickness gauge, Vickers hardness tester, scanning electron microscope (SEM) and X-ray diffraction (XRD). The results show that the ceramic membrane is mainly composed of α-Al2O3 and γ-Al2O3. When the mass concentration of cerium nitrate is 0.12g/L, the thickness of the ceramic membrane reaches the maximum, about 18 μm; The hardness reaches the highest, about 916HV0.2; The compactness is the best; The ceramic membrane shows better wear resistance. (3) sun Hua et al. studied the effect of cerium nitrate on the structure and properties of Ni-Co-P coating. cerium nitrate was added to Ni-Co-P electroless plating solution to study the effect of cerium nitrate on the structure and properties of Ni-Co-P coating. Using scanning electron microscope, X-ray diffractometer, electrochemical workstation and microhardness tester, the effects of cerium nitrate on the plating speed, coating morphology, structure, hardness and corrosion resistance of electroless plating Ni-Co-P were observed and analyzed. The experimental results show that the obtained Ni-Co-P coating is uniform and compact and the corrosion resistance is improved after plating with cerium nitrate. The XRD diffraction of the coating showed sharp diffraction peaks and showed microcrystalline diffraction characteristics. After heat treatment at 500 ℃, the Ni-Co-P alloy coating is completely transformed into crystalline state, resulting in hardened phase Ni3 P. After heat treatment at 500 ℃, the hardness of the coating is obviously improved. After plating with cerium nitrate added bath, the plating rate of electroless plating Ni-Co-P increases with the increase of cerium nitrate content, reaching the maximum at 0. 15 g L-1, the obtained Ni-Co-P coating is uniform and compact, and the corrosion resistance increases. The XRD diffraction of the coating after adding cerium nitrate showed sharp diffraction peaks, and the crystallization phenomenon was more obvious, showing crystal diffraction characteristics. After heat treatment at 500 ℃, the hardness of the coating is obviously improved, reaching up to 1300 HV. (4) Lin bilan et al. studied the effect of cerium nitrate treatment on the microstructure and corrosion resistance of phosphating films. in order to give full play to the advantages of phosphating films and cerium salt films, cerium nitrate pretreatment or cerium nitrate post-treatment was used to improve the phosphating films on hot galvanizing layers. the microstructure and corrosion resistance of cerium nitrate improved phosphating films were studied by SEM , EDS ,NSS and Tafel polarization, and compared with chromate passivation films. The results show that cerium nitrate pretreatment or post-treatment improved phosphating films are composite films containing P , O , Ce and Zn compounds, which basically overcome the defects of a single film layer and significantly enhance the corrosion resistance of the composite film. The corrosion resistance of the composite film improved by cerium nitrate post-treatment is better than that of chromate passivation film, and it is expected to become a substitute for highly toxic chromate passivation film. 1) Cerium nitrate pretreatment improved phosphating film is a composite film composed of P, O, Ce and Zn compounds. The surface is mainly amorphous cerium salt film, some needle crystals and a small number of small cracks and pits. When hot-dip galvanized steel is phosphated first and then treated with cerium nitrate, P, O, Ce and Zn compounds fill the gap between zinc phosphate crystals and form a continuous and complete composite film on the surface of zinc layer. 3) The pre-treatment or post-treatment of cerium nitrate significantly improves the corrosion resistance of the phosphating film. Cerium nitrate post-treatment improves the corrosion resistance of phosphating film better than chromate passivation film, and is expected to become a substitute for highly toxic chromate passivation film. (5): Du Yunyan and others studied the preparation of spherical nano-CeO2 particles by detonation of cerium nitrate. CeO2 nanoparticles were prepared by detonation synthesis method using cerium nitrate as raw material. The detonation products were detected and characterized by XRD and TEM, and the effects of urea and sodium nitrite on the morphology of the detonation products were investigated. The results of three experiments show that the CeO2 crystals obtained from the experiment are all cubic fluorite structures with particle sizes of 45 nm, 64 nm and 33 nm respectively. The comparison shows that after adding urea to the mixed explosive, the particle appearance is spherical; after adding sodium nitrite to the mixed explosive, the particle diameter is smaller. The detonation synthesis of nano-CeO2 particles was studied by three comparative experiments. Nano CeO2 particles were prepared in all three experiments. The morphology of the particles varies with the additives. From the process of preparing CeO2 by detonation method, it can be seen that no chemical solvents, acids and bases that must be recovered are produced in the product, so there is no need to recover pollutants like other synthesis methods. In addition, this method of preparing nano CeO2 has simple production process, low cost, and has the prospect of large-scale industrial application, which is worthy of in-depth research and development. Figure 2 TEM photo of nanometer CeO2 |
| use | used for sewage treatment using cerium nitrate hexahydrate to modify red mud, roasting to prepare adsorbent, Julie and others studied the influence factors of adsorbent adsorption and phosphorus removal, which opened up a new way for the comprehensive utilization of red mud. Red mud was modified with cerium nitrate hexahydrate and phosphorus-containing wastewater was treated. The experimental results show that when the mass fraction of cerium nitrate is 0.45% and the calcination temperature is 500 ℃, the adsorption performance of the prepared adsorbent is the best. When the initial pH of wastewater is 3 and the oscillation time is 80 min, the TP removal rate of wastewater is about 95%, and the mass concentration of phosphorus in wastewater is 0.41 mg/L, which meets the primary standard in the GB18918-2002 "Pollutant Discharge Standard for Urban Sewage Treatment Plants. The adsorption process of the adsorbent conforms to the Langmuir adsorption model. Using cerium nitrate hexahydrate modified red mud as adsorbent, when the mass fraction of cerium nitrate is 0.45% and the roasting temperature is 500 ℃, the adsorbent prepared by has the best adsorption performance. When the adsorbent is used to treat phosphorus-containing wastewater, when the initial wastewater pH is 3 and the oscillation time is 80 min, the TP removal rate of wastewater is about 95%, and the mass concentration of phosphorus in wastewater is 0.41 mg/L, meet the first-class standard in GB 18918-2002 "Pollutant Discharge Standard for Urban Sewage Treatment Plants. B) isothermal adsorption experiment results show that the adsorption behavior of the adsorbent conforms to the Langmuir equation, and the equilibrium adsorption capacity is 8.23 mg/g. used in biological treatment (1) Li Shanping studied the effect of cerium nitrate on sludge extracellular polymer and sludge granulation, and found that different mass concentrations of cerium nitrate have different effects on the specific oxygen consumption rate, growth rate, dehydrogenase activity and microbial phase of activated sludge, when the mass concentration is 50 mg/ L, it has obvious effect on improving sludge performance. Using common activated sludge as inoculated sludge and glucose and sodium acetate as carbon sources, the sludge granulation process was compared in two SBR reactors. By monitoring EPS components, sludge hydrophobicity, MLSS, SVI, COD, TN and TP, it is found that cerium nitrate can promote sludge granulation process. The stabilized cerium-containing granular sludge has the function of nitrogen and phosphorus removal at the same time, and the removal rates of COD, TN and TP reach 95%, 80% and 85% respectively. (1) The experimental results show that low mass concentration of cerium nitrate is beneficial to improve the activity of activated sludge, accelerate the growth of activated sludge and promote the aggregation of activated sludge flocs. High mass concentration of cerium nitrate has inhibitory effect on the growth and activity of activated sludge. (2) The appropriate mass concentration of cerium nitrate has a favorable effect on the metabolism of microorganisms and the secretion of extracellular enzymes, which is beneficial to the coagulation of sludge flocs, and has a significant promotion effect on the granulation of activated sludge, especially in sludge granulation. The first stage of cerium nitrate has a significant effect. The granulation process of cerium-containing sludge is significantly faster than that of sludge cultured by ordinary methods. The sludge in the two reactors is quite different in morphology and density. Cerium nitrate not only accelerates the granulation process of activated sludge, but also enhances the nitrogen and phosphorus removal capabilities of granular sludge. (2) Xu Lishan and others studied the effect of cerium nitrate on seed germination of Chinese cabbage under acid rain stress. The results showed that with the decrease of pH value of acid rain, the germination rate, root length, vigor index and germination index of Chinese cabbage seeds may weaken the free radical reaction induced by acid rain during seed germination and seedling growth, and promote root growth. Lower concentrations of cerium nitrate (e. g., 5, 10 mg /L) promoted the germination of cabbage seeds, but with the increase of cerium nitrate concentration (e. g., 50 mg /L), the germination of cabbage seeds was inhibited. Acid rain reduced the stress of cabbage seeds soaked with cerium nitrate at a certain concentration, indicating that cerium nitrate could alleviate the seed germination under acid rain stress. From the preliminary study, acid rain stress will inhibit the germination of cabbage seeds and reduce the yield of cabbage. Lower concentration of cerium nitrate can promote the germination of cabbage seeds, increase the yield of cabbage, and also improve the resistance of cabbage seeds to acid rain stress. However, when cerium nitrate solution is applied to soak seeds of cabbage to improve the yield of cabbage and relieve acid rain, it is very important to choose the appropriate concentration. (3) Anhui agricultural science discussed the effects of cerium nitrate with different concentrations of rare earth compounds on tissue culture seedlings, providing reference for the application of cerium nitrate in agriculture. Pumpkin tissue culture seedlings were cultured on MS medium containing cerium nitrate with different concentrations. The effects of rare earth compound cerium nitrate on tissue culture seedlings were studied by testing the number of leaves, plant height, fresh weight, chlorophyll content and other indexes of tissue culture seedlings. When the concentration of cerium nitrate is not higher than 10.0 μg/ml, it has no obvious effect on the growth of pumpkin tissue culture seedlings. The fresh weight and the contents of chlorophyll a and chlorophyll B of pumpkin tissue culture seedlings are slightly increased, and when the concentration of cerium nitrate is 10.0 μg/ml, the chlorophyll content, fresh weight and plant height all reach the maximum value. When the concentration is higher than 10.0 μg/ml, cerium nitrate has toxic effect on pumpkin tissue culture seedlings and increases with the increase of its concentration. When the concentration is 200.0 μg/ml, all three groups of tissue culture seedlings died. It can be seen that the effect of rare earth compound cerium nitrate on tissue culture seedlings is concentration-dependent. Low concentration (10.0 μg/ml) is helpful to the growth and development of tissue culture seedlings, while high concentration has toxic effect on tissue culture seedlings. (4) Yan Xuewu et al. conducted a study on the effect of cerium nitrate on reducing OH free radicals. OH free radicals belong to reactive oxygen radicals, which have strong oxidation and can damage the body in organisms. The rare earth ion Ce3 + in cerium nitrate has variable valence characteristics, it is easier to realize the transition between trivalent and tetravalent, and can react with OH radicals. In this study, the photocatalytic action of nano-TiO2_2 was used to generate OH radicals, cerium nitrate was mixed with TiO2, DMPO was used as a trapping agent, and electron spin resonance (ESR) method was used to prove that the number of OH radicals produced by nano-TiO2_2 was greatly reduced under the action of cerium nitrate, thus proving that cerium nitrate can effectively remove OH radicals. due to the variable valence of rare earth element Ce, it is easier to realize the transition between trivalent and tetravalent, this feature can be used to remove highly oxidizing OH radicals. ESR experiments confirmed that under the action of cerium nitrate, the number of OH radicals produced by nano-TiO2_2 was greatly reduced, thus proving that cerium nitrate can effectively scavenge OH radicals. |
| References | [1]http://baike.baidu.com/link?url=00C2vKMpYQw2nRLFkromN_WkwCe2QM3n0-_E631fB6dDF3DBr4u52GjdP75RTaw6yim90sbV_VH5Xc4x06h3u_ [2] Shen Panwen, edited by Wang Jitao. Compound dictionary. Shanghai: Shanghai Lexicographic Publishing House. 2002. Page 147. [3] Editor-in-Chief Ma Shichang. Dictionary of chemical substances. Xi'an: Shaanxi Science and Technology Press. 1999. Page 725 [4] Editor-in-Chief Ma Shichang. Dictionary of inorganic compounds. Xi'an: Shaanxi Science and Technology Press. 1988. Page 231. [5] Yang Qishan, He Wenxiu, Yang Hui, etc. Study on Preparation Technology of Clean Cerium Nitrate with Low Impurities *[J]. Rare Earth, 2013,34(5):35-40 [6] Hong Shangkun, Li Qingning, Qu Jingjing, etc. Effect of Cerium Nitrate Additive on Properties of Micro-arc Oxidation Ceramic Film on 7075 Aluminum Alloy [J]. China Surface Engineering, 2014,27(6):116-121. [7] Zhang Shenglin, Yang Liyun, Zhang Xiaolin, etc. Effect of Cerium Nitrate on Phosphating Process of 6061 Aluminum Alloy [J]. Rare Earth, 2008,29(6):36-40. [8] Sun Hua, Ma Hongfang, Guo Xiaofei, etc. Effect of Cerium Nitrate on Microstructure and Properties of Ni-Co-P Coatings [J]. Chinese Journal of Rare Earth, 2014,32(2):228-233. [9] Lin Bilan, Lu Jintang. Effect of Cerium Nitrate Treatment on Microstructure and Corrosion Resistance of Phosphating Film [J]. Surface Technology, 2010,39(4):47-49. [10] Du Yunyan, Li Xiaojie, Wang Xiaohong, etc. Preparation of Spherical Nano CeO2 Particles by Cerium Nitrate Detonation [J]. Explosion and Impact, 2009,29(1):41-44. [11] Zhu Li, Li Ye, Zhang Meng, etc. Preparation of Phosphorus Removal Adsorbent by Cerium Nitrate Modified Red Mud [J]. Chemical Environmental Protection, 2012,32(1):81-84. [12] Li Shanping, Xiao Naidong, Zhao Yuxiao, etc. Effect of Cerium Nitrate on Extracellular Polymers and Sludge Granulation [J]. Journal of Shandong University (Science Edition),2008,43(1):24-27. [13] Xu Lishan, Zhu Weifeng, Gong Ruli, etc. Effects of Cerium Nitrate on Seed Germination of Chinese Cabbage under Acid Rain Stress [J]. Seeds, 2007,26(2):66-68.DOI:10.3969/J. ISSN.1001 -4705.2007.02.019. [14] Study on the Effect of Cerium Nitrate on the Growth of Pumpkin Tissue Culture Seedlings [J]. Anhui Agricultural Sciences, 2009,37(27):13022-13023,13059. [15] Yan Xuewu, Jin Zongzhe, Liang Jinsheng, etc. Study on the Effect of Cerium Nitrate on OH Radical Reduction [J]. Rare Metal Materials and Engineering, 2004,33(11):1206-1208. |
| Production method | It can be prepared by dissolving cerium hydroxide in dilute nitric acid and nitric acid respectively. |
Last Update：2024-04-09 15:16:44
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