Active surface formation of tungstated zirconia catalysts for n-heptane isomerization

被引：18
|
作者：
Smolikov, Mikhail D. [1 ]
Shkurenok, Violetta A. [1 ]
Kir'yanov, Dmitryi I. [1 ]
Belyi, Alexander S. [1 ]
机构：
[1] RAS, Inst Hydrocarbons Proc SB, Neftezavodskaya 54, Omsk, Russia
来源：
CATALYSIS TODAY | 2019年 / 329卷
关键词：
n-Heptane isomerization; Tungstated zirconia; Phase composition; Catalyst acidity; High octane component; SULFATED ZIRCONIA; SOLID-SOLUTIONS; WO3; PT/SO42-/ZRO2; PLATINUM; OXIDE;
D O I：
10.1016/j.cattod.2019.01.036
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A comprehensive study of the regularities in the formation of active surface of WO3/ZrO2 catalysts for n-heptane isomerization was performed. The WO3 content in the catalysts (10-35 wt. %) and calcination temperature of WO3/ZrO2 (700-1000 degrees C) were found to affect the textural characteristics, phase composition, acidic and catalytic properties in n-heptane isomerization. It was shown that the catalyst with high isomerization activity comprises three phases: tetragonal zirconia (45-70%), monoclinic zirconia (20-41%), and monoclinic tungsten oxide (10-14%). The indicated phase composition can be created by thermal treatment at 850-950 degrees C of WO3/ZrO2 containing 25 wt. % WO3.
引用
收藏
页码：63 / 70
页数：8
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