Reaction network of indole hydrodenitrogenation over NiMoS/γ-Al2O3 catalysts

被引：51

作者：

Bunch, A ^{[1
]}

Zhang, LP ^{[1
]}

Karakas, G ^{[1
]}

Ozkan, US ^{[1
]}

机构：

[1] Ohio State Univ, Dept Chem Engn, Columbus, OH 43210 USA

来源：

APPLIED CATALYSIS A-GENERAL | 2000年 / 190卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

supported NiMo sulfide; hydrodenitrogenation (HDN); indole; o-ethylaniline (OEA); reaction mechanism;

D O I：

10.1016/S0926-860X(99)00270-7

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：

The reaction network of indole hydrodenitrogenation (HDN) was investigated over gamma-Al2O3 supported NiMo sulfide catalysts in an effort to acquire a fundamental understanding of the different reaction pathways in the mechanism. Experiments were performed primarily at 1000 psig, using a wide range of temperatures and feed concentrations. The effect of H2S on different reaction Steps of the network was also investigated. Two major pathways were proposed to account for the formation of ethylcyclohexane (ECH) and ethylbenzene (EB) which are the two main HDN products from indole. One route occurs from the hydrogenolysis of indoline to o-ethylaniline (OEA) and the other from the hydrogenation of indoline to octahydro-indole. Also included in the proposed mechanism is a secondary route from o-ethylcyclohexylamine (OECHA) to ethylcyclohexene (ECHE), that occurs through a nucleophilic substitution reaction. The product distribution was a strong function of temperature and H2S concentration. H2S enhanced the hydrogenolysis reactions but inhibited the hydrogenation reactions. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：51 / 60

页数：10

共 29 条

[21]

STEELE WV, 1988, 22FE60149 US DOE NIP

[22] REACTION NETWORKS IN CATALYTIC HYDRODENITROGENATION [J].

STERN, EW .

JOURNAL OF CATALYSIS, 1979, 57 (03) :390-396

[23]

TopsOe H, 1996, HYDROTREATING CATALY

[24]

VANDEREIJK JM, 1988, P 9 INT C CAT, V1, P50

[25] CATALYTIC HYDRODENITROGENATION OF QUINOLINE IN A TRICKLE-BED REACTOR - EFFECT OF HYDROGEN-SULFIDE [J].

YANG, SH ;

SATTERFIELD, CN .

INDUSTRIAL & ENGINEERING CHEMISTRY PROCESS DESIGN AND DEVELOPMENT, 1984, 23 (01) :20-25

[26] SOME EFFECTS OF SULFIDING OF A NIMO AL2O3 CATALYST ON ITS ACTIVITY FOR HYDRODENITROGENATION OF QUINOLINE [J].

YANG, SH ;

SATTERFIELD, CN .

JOURNAL OF CATALYSIS, 1983, 81 (01) :168-178

[27]

ZEUTHEN P, 1987, B SOC CHIM BELG, V96, P985

[28]

Zhang L, 1996, STUD SURF SCI CATAL, V101, P1223

[29]

Zhang LP, 1997, STUD SURF SCI CATAL, V106, P69

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