Isobutane/butene alkylation on solid catalysts. Where do we stand?
Isobutane/butene alkylation on solid catalysts. Where do we stand?
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DOI：
10.1016/s0920-5861(98)00424-6
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发表时间：
1999-02
期刊：
影响因子：
5.3
通讯作者：
J. Weitkamp;Y. Traa
中科院分区：
文献类型：
--
作者：
J. Weitkamp;Y. Traa
目前在石油精炼中使用以浓硫酸或氟化氢作为催化剂的液相方法，用于由异丁烷和丁烯制造烷基化汽油。虽然产品，即，烷基化物是最有价值的汽油组分，但其现有的制造方法不太令人满意。用固体酸代替液体催化剂是现代研究的重要目标。在过去的二十年里，大量的固体酸已经被仔细审查，并且至少有四个开发被推动到中试工厂阶段。在本文中，试图合理化，在机械的基础上，选择性损失几乎总是遇到固体酸后，相对较短的时间内流。对今后异丁烷/烯烃烷基化反应的研究方向提出了建议。
Liquid-phase processes with concentrated sulfuric acid or hydrogen fluoride as catalysts are currently being used in petroleum refining for the manufacture of alkylation gasoline from isobutane and butenes. While the product, i.e., alkylate, is a most valuable gasoline component, the existing processes for its manufacture are less satisfactory. Replacement of the liquid catalysts by a solid acid is an important target of modern research. In the past two decades, a large number of solid acids have been scrutinized, and at least four developments were driven till the pilot plant stage. In this paper, an attempt is made to rationalize, on a mechanistic basis, the selectivity loss almost always encountered with solid acids after relatively short times-on-stream. Suggestions are made concerning a more target-oriented research on isobutane/alkene alkylation in the future.