Catalytic Properties of Amorphous Silica-alumina Prepared Using Dicarboxylic and Tricarboxylic Acids as Matrix in Catalytic Cracking of n-Dodecane

被引：14
作者：
Ishihara, Atsushi [1 ]
Negura, Hirotaka [1 ]
Inui, Kentarou [1 ]
Hashimoto, Tadanori [1 ]
Nasu, Hiroyuki [1 ]
机构：
[1] Mie Univ, Grad Sch Engn, Tsu, Mie 5148507, Japan
来源：
JOURNAL OF THE JAPAN PETROLEUM INSTITUTE | 2011年 / 54卷 / 03期
关键词：
Catalytic cracking; Matrix; Amorphous silica-alumina; Sol-gel method; n-Dodecane; Beta zeolite catalyst; MESOPOROUS ALUMINOSILICATES; ZEOLITE; PRECURSORS; ZSM-5; SEEDS;
D O I：
10.1627/jpi.54.189
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Amorphous silica-aluminas were prepared by the sol-gel method using carboxylic acids, malic acid (MA), succinic acid and citric acid, and the reactivity for catalytic cracking was investigated. When the ratio of MA/TEOS (tetraethoxysilane) increased, surface area, pore volume and pore diameter increased and mesopores were formed. The maximum total conversions of n-dodecane were around 30% with the single amorphous silica-alumina. In contrast, the total conversion reached 91% with the single beta-zeolite. To investigate the reactivity of amorphous silica-alumina as a matrix, mixed catalysts consisting of zeolite, amorphous silica-alumina and binder (alumina sol) were prepared. The product distribution changed compared with the single zeolite or silica-alumina, and comparable activity to that of zeolite was obtained although the mixed catalysts included only 1/4 of zeolite. Mixed catalysts using amorphous silica-alumina with mesopores (MA 122-5) exhibited higher ratio of multi-branched to single-branched products in the gasoline fraction (C5-C11) than single zeolite. The effect of the addition of 1-dodecene and 1-methylnaphthalene was also investigated.
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页码：189 / 200
页数：12
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