Y/ASA复合材料的制备及加氢裂化性能

孟庆磊; 刘百军; 盖有东; 何琳琳

Y/ASA复合材料的制备及加氢裂化性能

中国石油大学(北京) CNPC催化重点实验室, 北京 102249

基金项目: 中国石油天然气集团公司科技开发项目(20111A-2101);中国石油天然气股份公司科技开发项目(2010E-1908)

详细信息

通讯作者:
刘百军(1965-);男,博士,Tel:010-89733751; E-mail: bjliu@cup.edu.cn

中图分类号: O643
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出版历程
- 收稿日期: 2011-02-17
- 刊出日期: 2012-03-31

Synthesis and hydrocracking performance of Y/ASA composite

The Key Laboratory of Catalysis, China National Petroleum Corporation, China University of Petroleum, Beijing 102249

摘要

摘要: 采用原位包覆技术制备了无定形硅铝(ASA)包覆Y型分子筛的Y/ASA复合材料。分别以Y/ASA复合材料和工业Y分子筛与ASA的机械混合材料Y-ASA为载体,Ni-W为活性组分,制备了两种负载型催化剂,并考察了两种催化剂的加氢裂化性能,通过XRD、SEM、吸附吡啶的原位红外光谱和N₂吸附-脱附对载体和催化剂进行了表征。结果表明,Y/ASA载体和Ni-W/Y/ASA的总酸量较低,但强酸量和强弱酸比例均高于Y-ASA和Ni-W/Y-ASA,Y/ASA载体和Ni-W/Y/ASA催化剂拥有更大的介孔比表面积、孔容及平均孔径。正癸烷的加氢裂化反应结果表明,Ni-W/Y/ASA催化剂上正癸烷的转化率和中间组分(C_5~9)收率比Ni-W/Y-ASA催化剂分别高7.6 %和12.4 %。
- Y/ASA /
- Y-ASA /
- 原位包覆 /
- 正癸烷 /
- 加氢裂化 /
- 中间组分
Abstract: In-situ covering technology was used to prepare the Y/ASA composite material in which Y zeolite was covered around with amorphous silica-alumina (ASA). Two kinds of supported Ni-W catalysts for hydrocracking of decane were prepared using Y/ASA and Y-ASA as supports, respectively. Y-ASA was a kind of mechanical mixture of industrial Y zeolite and ASA. The supports and catalysts were characterized by X-ray powder diffraction, scanning electron microscopy, infrared spectroscopy of pyridine adsorption and N₂ adsorption-desorption. The results showed that, while there were less total acid sites on Y/ASA and Ni-W/Y/ASA, there were more strong acid sites.The ratios of strong acid sites to weak acid sites of Y/ASA and Ni-W/Y/ASA were higher than those of Y-ASA and Ni-W/Y-ASA. The average pore diameter, mesopore surface area and pore volume of Y/ASA and Ni-W/Y/ASA were larger than those of the comparative samples, respectively. The hydrocracking of decane over the Ni-W/Y/ASA catalyst revealed that the conversion and yield of middle-component(C_5~9) were improved by 7.6 % and 12.4 %, respectively, compared with that over Ni-W/Y-ASA catalyst.
- Y/ASA /
- Y-ASA /
- in-situ covering /
- decane /
- hydrocracking /
- middle-component

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