Effect of nickel precursors on the performance of Ni/AlMCM-41 catalysts for n-dodecane hydroconversion

被引：83

作者：

Fang, KG ^{[1
]}

Ren, J ^{[1
]}

Sun, YH ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2005年 / 229卷 / 1-2期

关键词：

AIMCM-41; nickel precursor; bifunctional catalyst; n-dodecane hydroconversion;

D O I：

10.1016/j.molcata.2004.10.055

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 bifunctional Ni/AlMCM-41 catalysts with 2.0 wt.% nickel loading were prepared by means of the wetness impregnation technique using three nickel precursors: nickel nitrate, alkaline tetraamine nickel nitrate and nickel citrate. The texture, crystal phase and surface metal/acidity functions were characterized by the techniques such as N-2-sorption, XRD, XPS, H-2-chemisorption, FT-IR and NH3-TPD. It was shown that the catalyst prepared with nickel citrate exhibited stronger metal-support interaction and higher metal dispersion than those prepared with nickel nitrate and alkaline tetraamine nickel nitrate. The intimate metal-acid interaction and the enhanced (de)hydrogenating capability of this catalyst led to the highest catalytic activity and isomerization selectivity in n-dodecane hydroconversion. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：51 / 58

页数：8

共 53 条

[11] Superficial characterization and hydroconversion of tetralin over NiW sulfide catalysts supported on zirconium doped mesoporous silica [J].

Eliche-Quesada, D ;

Mérida-Robles, J ;

Maireles-Torres, P ;

Rodríguez-Castellón, E ;

Jiménez-López, A .

APPLIED CATALYSIS A-GENERAL, 2004, 262 (01) :111-120

[12] Hydrogenation and ring opening of tetralin on supported nickel zirconium-doped mesoporous silica catalysts.: Influence of the nickel precursor [J].

Eliche-Quesada, D ;

Mérida-Robles, J ;

Maireles-Torres, P ;

Rodríguez-Castellón, E ;

Jiménez-López, A .

LANGMUIR, 2003, 19 (12) :4985-4991

[13] DETERMINATION OF INTEGRATED MOLAR EXTINCTION COEFFICIENTS FOR INFRARED-ABSORPTION BANDS OF PYRIDINE ADSORBED ON SOLID ACID CATALYSTS [J].

EMEIS, CA .

JOURNAL OF CATALYSIS, 1993, 141 (02) :347-354

[14] n-Dodecane hydroconversion over Ni/AlMCM-41 catalysts [J].

Fang, KG ;

Wei, W ;

Ren, J ;

Sun, YH .

CATALYSIS LETTERS, 2004, 93 (3-4) :235-242

[15] Catalytic activity of (P)NiMo/Ti-HMS and (P)NiW/Ti-HMS catalysts in the hydrogenation of naphthalene [J].

Halachev, T ;

Nava, R ;

Dimitrov, L .

APPLIED CATALYSIS A-GENERAL, 1998, 169 (01) :111-117

[16] Ethylene dimerization and butene isomerization in nickel-containing MCM-41 and AlMCM-41 mesoporous molecular sieves: An electron spin resonance and gas chromatography study [J].

Hartmann, M ;

Poppl, A ;

Kevan, L .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (23) :9906-9910

[17] FORMATION AND STABILITY OF NI(I) IONS IN MCM-41 MESOPOROUS MOLECULAR-SIEVES [J].

HARTMANN, M ;

POPPL, A ;

KEVAN, L .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (49) :17494-17496

[18]

Huesca R.H., 2001, J CATAL, V203, P122

[19] Preparation and characterization of Ni nanoparticles in an MCM mesoporous material [J].

Jung, JS ;

Chae, WS ;

McIntyre, RA ;

Seip, CT ;

Wiley, JB ;

O'Connor, CJ .

MATERIALS RESEARCH BULLETIN, 1999, 34 (09) :1353-1360

[20]

JUNGES U, 1998, STUD SURF SCI CATAL, V117, P493

← 1 2 3 4 5 6 →