无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2020, Vol. 52 ›› Issue (12): 109-112.doi: 10.11962/1006-4990.2020-0016

• 催化材料 • 上一篇    下一篇

钛-硅复合氧化物比表面积的影响因素研究

郭秋双(),吴同旭,蔡哲,蔡奇,李晓云,孙彦民   

  1. 中海油天津化工研究设计院有限公司,天津市炼化催化技术工程中心,天津 300131
  • 收稿日期:2020-06-14 出版日期:2020-12-10 发布日期:2020-12-15
  • 作者简介:郭秋双(1987— ),女,研究生,中级工程师,研究方向为催化剂的研发;E-mail:qiushuanglguo@163.com

Study on influence factors of specific surface area of Ti-Si composite oxides

Guo Qiushuang(),Wu Tongxu,Cai Zhe,Cai Qi,Li Xiaoyun,Sun Yanmin   

  1. Tianjin Refining and Catalytic Technology Engineering Center,CenerTech Tianjin Chemical Research and Design Institute Co.,Ltd.,Tianjin 300131,China
  • Received:2020-06-14 Published:2020-12-10 Online:2020-12-15

摘要:

以无机盐为原料采用溶胶-凝胶法制备了钛-硅复合氧化物(TiO2-SiO2)。利用氮气吸附-脱附法对复合氧化物进行了比表面积分析。考察了原料配比、加料方式、表面活性剂、反应温度、老化温度、老化时间、焙烧温度等因素对复合氧化物比表面积的影响。综合结果表明:当二氧化钛质量分数为22%、添加剂为十六烷基三甲基溴化铵(CTAB)、反应温度为30 ℃、老化温度为70 ℃、老化时间为1 h、焙烧温度为150 ℃时,制备的复合氧化物的比表面积为361.4 m2/g、孔容为1.18 cm3/g、平均孔径为13.0 nm。不同因素对比表面积均有一定的影响,依据规律可以实现复合氧化物比表面积的可控调变。

关键词: 钛硅, 复合氧化物, 比表面积

Abstract:

TiO2-SiO2 composite oxide was prepared by sol-gel method using inorganic salts.The surface area of composite oxide materials was tested and analyzed by N2-adsorption method,and the factors,such as ratio of raw materials,feeding ways,surface active agent,reaction temperature,aging temperature,aging time and calcination temperature etc.,on the specific surface area of composite oxide were investigated.Results showed that when the mass fraction of TiO2 was 22%,additive was CTAB,reaction temperature was 30 ℃,aging temperature was 70 ℃,aging time was 1 h and calcination temperature was 150 ℃,then the specific surface area of prepared composite oxide was 361.4 m2/g,pore volume was 1.18 cm3/g and the average pore size was 13.0 nm.Different factors all had certain influence on the surface area,the composite oxide pore structure can controlled according to rules.

Key words: titanium silicon, composite oxide, specific surface area

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