SOLID CATALYSTS TREATED WITH ANIONS .21. ZIRCONIA-SUPPORTED CHROMIUM CATALYST FOR DEHYDROCYCLIZATION OF HEXANE TO BENZENE

被引：16

作者：

ARATA, K ^{[1
]}

HINO, M ^{[1
]}

MATSUHASHI, H ^{[1
]}

机构：

[1] HAKODATE TECH COLL,HAKODATE 042,JAPAN

来源：

APPLIED CATALYSIS A-GENERAL | 1993年 / 100卷 / 01期

关键词：

CHROMIUM OXIDE; DEHYDROCYCLIZATION; ELECTRON SPIN RESONANCE; HEXANE; REFORMING CATALYST; X-RAY PHOTOELECTRON SPECTROSCOPY; ZIRCONIUM OXIDE;

D O I：

10.1016/0926-860X(93)80112-4

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：

A dehydrogenation catalyst for alkanes was obtained by immersing Zr(OH)4 in 0.05 M (NH4)2CrO4, followed by calcination in air at 600-800-degrees-C and reduction at 550-degrees-C (0.5 wt.-% Cr). This catalyst converted hexane into benzene with a selectivity of up to 89% under pulse conditions, and the yield of benzene at 550-degrees-C was steady up to 6 h with 76% selectivity in a flow system at atmospheric pressure. HfO2 was also effective as a support, but Al2O3, SiO2, TiO2, and SnO2 were not. Measurements of ESR and XPS showed the ZrO2 catalyst to be Cr(III)-Cr(IV), created by reduction of CrO42-/ZrO2.

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页码：19 / 26

页数：8

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