Analysis of coke deposition profiles in commercial spent hydroprocessing catalysts using Raman spectroscopy

被引：57

作者：

Vogelaar, Bas M.

van Langeveld, A. Dick

Eijsbouts, Sonja

Moulijn, Jacob A.

机构：

[1] Delft Univ Technol, Fac Sci Appl, Dept Reactor & Catalysis Engn, NL-2628 BL Delft, Netherlands

[2] Albemarle Catalysts, NL-1030 BE Amsterdam, Netherlands

来源：

FUEL | 2007年 / 86卷 / 7-8期

关键词：

coke deposition; hydroprocessing; Raman spectroscopy;

D O I：

10.1016/j.fuel.2006.10.002

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：

The distribution of coke inside the pellets of several industrial spent hydroprocessing catalysts was analyzed using Raman spectroscopy. The shape of the coke profiles gives us information on the deactivation mechanism and the magnitude of diffusion limitations. Samples taken at the end of run showed the most pronounced coke profiles. Typical M-shaped profiles observed in a guard bed catalyst suggest a sequential deactivation mechanism and a strong diffusion resistance. Consequently, it is concluded that near the end of life the catalyst effectiveness factor can be significantly reduced by coke deposition. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1122 / 1129

页数：8

共 30 条

[1] EFFECT OF COKE DEPOSITION ON THE EFFECTIVE DIFFUSIVITY OF CATALYST PELLETS [J].