Chen Shanhu, G. Yi, Lan Li, Zhao Ming, Shi Zhonghua, Gong Maochu, Chen Yaoqiang
{"title":"碳酸铵水解法制备高热稳定性介孔CeO2","authors":"Chen Shanhu, G. Yi, Lan Li, Zhao Ming, Shi Zhonghua, Gong Maochu, Chen Yaoqiang","doi":"10.3969/J.ISSN.1001-4861.2013.00.219","DOIUrl":null,"url":null,"abstract":"Two series of CeO2 materials were prepared by two different synthetic routes, i.e. the conventional ammonia precipitation route (CR) and the ammonium carbonate hydrolysis route (HA) using (NH4)(2)CO3 in the presence of hydrogen peroxide. The formation process and decomposition behavior of the precipitates were investigated by FTIR, Raman, thermogravimetric and differential thermal analysis (TG/DTA) and X-ray photoelectron spectroscopy (XPS). The results show that the as-prepared precipitate obtained by HA consists of O-2(2-), CO32- and OH- species. However, after hydrothermal digestion at 80 degrees C, the CO32- species is gradually hydrolyzed into OH- species. Although the chemical components of the digested precipitates prepared by these two routes are almost the same, the agglomeration of CeO2 particles is markedly modified. The CeO2 powder produced by HA exhibits higher thermal stability and better reduction property compared to that obtained by CR. After the heat treatment at 900 degrees C for 3 h, the CeO2 powder from HA route still remains a surface area of 27 m(2).g(-1).","PeriodicalId":9986,"journal":{"name":"无机化学学报","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2013-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Preparation of Mesoporous CeO2 with High Thermal Stability by Ammonium Carbonate Hydrolysis Method\",\"authors\":\"Chen Shanhu, G. Yi, Lan Li, Zhao Ming, Shi Zhonghua, Gong Maochu, Chen Yaoqiang\",\"doi\":\"10.3969/J.ISSN.1001-4861.2013.00.219\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Two series of CeO2 materials were prepared by two different synthetic routes, i.e. the conventional ammonia precipitation route (CR) and the ammonium carbonate hydrolysis route (HA) using (NH4)(2)CO3 in the presence of hydrogen peroxide. The formation process and decomposition behavior of the precipitates were investigated by FTIR, Raman, thermogravimetric and differential thermal analysis (TG/DTA) and X-ray photoelectron spectroscopy (XPS). The results show that the as-prepared precipitate obtained by HA consists of O-2(2-), CO32- and OH- species. However, after hydrothermal digestion at 80 degrees C, the CO32- species is gradually hydrolyzed into OH- species. Although the chemical components of the digested precipitates prepared by these two routes are almost the same, the agglomeration of CeO2 particles is markedly modified. The CeO2 powder produced by HA exhibits higher thermal stability and better reduction property compared to that obtained by CR. After the heat treatment at 900 degrees C for 3 h, the CeO2 powder from HA route still remains a surface area of 27 m(2).g(-1).\",\"PeriodicalId\":9986,\"journal\":{\"name\":\"无机化学学报\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2013-10-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"无机化学学报\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.3969/J.ISSN.1001-4861.2013.00.219\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"无机化学学报","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.3969/J.ISSN.1001-4861.2013.00.219","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Preparation of Mesoporous CeO2 with High Thermal Stability by Ammonium Carbonate Hydrolysis Method
Two series of CeO2 materials were prepared by two different synthetic routes, i.e. the conventional ammonia precipitation route (CR) and the ammonium carbonate hydrolysis route (HA) using (NH4)(2)CO3 in the presence of hydrogen peroxide. The formation process and decomposition behavior of the precipitates were investigated by FTIR, Raman, thermogravimetric and differential thermal analysis (TG/DTA) and X-ray photoelectron spectroscopy (XPS). The results show that the as-prepared precipitate obtained by HA consists of O-2(2-), CO32- and OH- species. However, after hydrothermal digestion at 80 degrees C, the CO32- species is gradually hydrolyzed into OH- species. Although the chemical components of the digested precipitates prepared by these two routes are almost the same, the agglomeration of CeO2 particles is markedly modified. The CeO2 powder produced by HA exhibits higher thermal stability and better reduction property compared to that obtained by CR. After the heat treatment at 900 degrees C for 3 h, the CeO2 powder from HA route still remains a surface area of 27 m(2).g(-1).
期刊介绍:
“Chinese Journal of Inorganic Chemistry” publishes fundamental studies in all phases of inorganic chemistry, including solid-state chemistry, coordination chemistry, inorganic materials chemistry, bioinorganic chemistry, organometallic chemistry, theoretical inorganic chemistry, supermolecule chemistry, applied inorganic chemistry and related field of catalysis. Emphasis is on the synthesis, thermodynamics, kinetics, spectroscopy, structure and bonding properties of new and known compounds.
In addition to full-length research articles, “Chinese Journal of Inorganic Chemistry” also publishes notes, letters, and reviews. “Chinese Journal of Inorganic Chemistry” accepts manuscript written in simplified Chinese or English.