MO-USY ZEOLITES FOR HYDRODESULFURIZATION .2. SURFACE-PROPERTIES OF SULFIDED CATALYSTS AND ACTIVITY FOR THIOPHENE HYDRODESULFURIZATION

被引：31

作者：

ANDERSON, JA ^{[1
]}

PAWELEC, B ^{[1
]}

FIERRO, JLG ^{[1
]}

ARIAS, PL ^{[1
]}

DUQUE, F ^{[1
]}

CAMBRA, JF ^{[1
]}

机构：

[1] ESCUELA TECN SUPER INGN,E-48013 BILBAO,SPAIN

来源：

APPLIED CATALYSIS A-GENERAL | 1993年 / 99卷 / 01期

关键词：

CATALYST CHARACTERIZATION (NO AND PYRIDINE ADSORPTION; XPS); MOUHY ZEOLITE CATALYSTS; THIOPHENE HYDRODESULFURIZATION; ZEOLITES;

D O I：

10.1016/0926-860X(93)85039-R

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：

MolYbdena-containing ultrastable (USHY) zeolite catalysts were prepared using different molybdenum precursors and activation Procedures and the sulphided catalysts were characterised by nitric oxide and pyridine adsorption, X-ray photoelectron spectroscopy and tested in the hydrodesulphurization (HDS) of thiophene at 3 MPa pressure and a reaction temperature of 623 K. MoUSY catalyst exhibited decreasing conversions as a function of time-on-stream due to coking while thiophene conversion over MoNaY remained constant. No relationship between dispersion and HDS or hydrogenation selectivity was found. Differences between hydrogenation selectivities over MoUSY and MoNaY catalysts were attributed to the low concentration of support bound molybdenum species in the oxide form of the latter catalyst.

引用

页码：55 / 70

页数：16

共 35 条

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