[1]劉欣,賈偉,張愛琴,等.CeO2、TiO2及Ce0.5Ti0.5O2催化載體的制備及性能研究[J].中國(guó)材料進(jìn)展,2019,(04):401-409.[doi:10.7502/j.issn.1674-3962.2019.04.11]
LIU Xin,JIA Wei,ZHANG Aiqin,et al.Preparation and Properties of CeO2, TiO2 and Ce0.5Ti0.5O2 Catalytic Carriers[J].MATERIALS CHINA,2019,(04):401-409.[doi:10.7502/j.issn.1674-3962.2019.04.11]
點(diǎn)擊復(fù)制
CeO2、TiO2及Ce0.5Ti0.5O2催化載體的制備及性能研究(
)
中國(guó)材料進(jìn)展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
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- 期數(shù):
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2019年第04期
- 頁(yè)碼:
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401-409
- 欄目:
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研究報(bào)告
- 出版日期:
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2019-04-30
文章信息/Info
- Title:
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Preparation and Properties of CeO2, TiO2 and Ce0.5Ti0.5O2 Catalytic Carriers
- 作者:
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劉欣1; 2; 3; 賈偉1; 4; 張愛琴1; 申倩倩1; 4; 賈虎生1; 4; 許并社1; 4
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(1. 太原理工大學(xué) 新材料界面科學(xué)與工程教育部重點(diǎn)實(shí)驗(yàn)室，山西 太原 030024)(2. 太原理工大學(xué)材料科學(xué)與工程學(xué)院，山西 太原 030024)(3. 中海油太原貴金屬有限公司,山西 太原 030006)(4. 太原理工大學(xué) 新材料工程技術(shù)研究中心，山西 太原 030024）
- Author(s):
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LIU Xin1; 2; 3; JIA Wei1; 4; ZHANG Aiqin1; SHEN Qianqian1; 4; JIA Husheng1; 4; XU Bingshe1; 4
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(1. Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education,Taiyuan University of Technology, Taiyuan 030024, China)（2. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China） （3. China National Offshore Oil Taiyuan Precious Metals Co.,Ltd., Taiyuan 030006, China）(4. Research Centre of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China)
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- 關(guān)鍵詞:
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氧化鈰; 二氧化鈦; 制備方法; 氧化還原能力; 催化載體
- Keywords:
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ceria; titania; preparation method; redox property; catalytic carriers
- DOI:
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10.7502/j.issn.1674-3962.2019.04.11
- 文獻(xiàn)標(biāo)志碼:
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A
- 摘要:
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采用熱分解法、溶膠-凝膠法、沉淀法和水熱法制備了CeO2載體，SEM、XRD表征、N2低溫吸脫附和氫氣程序升溫還原（H2-TPR）實(shí)驗(yàn)和結(jié)果分析顯示，溶膠-凝膠法制備樣品具有更優(yōu)的比表面積、孔容、孔徑和氧化還原性能，故選擇溶膠-凝膠法制備Ti0.5Ce0.5O2混合氧化物催化載體。使用XRD、SEM、N2低溫吸脫附、H2-TPR等分析手段對(duì)產(chǎn)物的物相特征、吸附性能和氧化還原性能進(jìn)行了表征。Ti0.5Ce0.5O2的H2-TPR在261、529和749 ℃處出現(xiàn)耗氫峰，分別歸屬于表面吸附氧的還原、表面晶格氧的還原和體相晶格氧的還原，TEM結(jié)果表明Ti4+離子進(jìn)入CeO2晶格形成TiO2-CeO2填隙固溶體，固溶體的形成有利于載體氧化還原能力的增強(qiáng)。
- Abstract:
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The CeO2 carriers were prepared by thermal decomposition, sol-gel, precipitation and hydrothermal methods. The results of XRD and SEM analysis, N2 adsorptiondesorption isotherms and H2temperatureprogrammed reduction (H2-TPR) patterns showed that the CeO2 particles obtained by sol-gel method possess good specific surface area, pore volume, pore diameter, and redox performance. Therefore, The mixed oxide catalyst carrier Ce0.5Ti0.5O2 was prepared by sol-gel method. The phase analysis, adsorption and redox properties of samples were investigated. The positions of hydrogen consumption peak of Ce0.5Ti0.5O2 H2-TPR pattern were 261, 529 and 749 ℃, attributed to adsorbed oxygen redox on the surface, lattice oxygen redox on the surface and the body phase lattice oxygen redox, respectively. The result of TEM showed that Ti4+ entered into the CeO2 lattice and formed interstitial solid solution, it not only reduced the reduction temperature of CeO2 and TiO2, but also enhanced the redox property.
更新日期/Last Update:
2019-05-09