Design of a multimetallic catalyst system for hydrocarbon synthesis: A statistical optimisation procedure

被引：6

作者：

Chen, H ^{[1
]}

Adesina, AA ^{[1
]}

机构：

[1] UNIV NEW S WALES,SCH CHEM ENGN & IND CHEM,SYDNEY,NSW 2052,AUSTRALIA

来源：

APPLIED CATALYSIS A-GENERAL | 1997年 / 162卷 / 1-2期

关键词：

Fischer-Tropsch catalyst; hydrocarbon synthesis; statistical evaluation;

D O I：

10.1016/S0926-860X(97)00082-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper reports the application of fractional factorial technique in the design and selection of an optimal K-promoted Co-Mo catalyst system for hydrocarbon production from CO hydro enation. Catalyst samples were prepared via incipient wetness impregnation and evaluated using a syngas mixture with H-2/CO=2 at 101 kPa and 553 K in a fixed bed reactor. Characterisation data from TGA, XRD, TEM-EDS and XPS showed that the formation of new phases between Co and Mo oxides was practically non-existent. Inferences from statistical analysis, qualitative rate data interpretation and modelling exercise all suggest that K and Co are required for both activity and selectivity. Mo, however, inhibited the overall synthesis rate but significantly improved alkene selectivity, due to methane suppression. Increased calcination temperature (within the range 573-723 K) enhanced BET surface area, but was deleterious to both activity and selectivity. (C) 1997 Elsevier Science B.V.

引用

页码：47 / 56

页数：10

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