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

页码：63 / 70

页数：8