Effect of coke formation on the transformations of butylenes on a high-silica zeolite catalyst

被引：0

作者：

F. A. Gashimov

A. I. Kozharov

P. A. Nadirov

J. I. Mirzai

机构：

[1] Azerbaijan State Oil Academy,

来源：

Russian Journal of Physical Chemistry A | 2010年 / 84卷

关键词：

Differential Thermal Analysis; Butylene; Liquid Product; Differential Thermal Analysis Curve; Acid Center;

D O I：

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学科分类号：

摘要：

The transformations of butylenes on a high-silica zeolite catalyst (HHSZC) at 423–773 K were studied. Liquid reaction products formed above 443 K. The liquid phase of the reaction products mainly consisted of aliphatic hydrocarbons at 448–523 K and aromatic hydrocarbons at 623–723 K. The catalyst activity in the formation of liquid products did not show itself until 4–6% consolidation products (CPs) accumulated on its surface. DTA and gravimetric studies showed that CPs were nonuniform in composition. Some of the CPs were removed by decomposition under nitrogen, while others by oxidation with oxygen. It was inferred from ammonia adsorption data that the accumulation of CPs on the surface of HHSZC led to a decrease in the number of acid centers.

引用

页码：1333 / 1336

页数：3