The Reaction Mechanism of Catalytic Cracking: Quantifying Activity, Selectivity, and Catalyst Decay

IF 9.3 2区 化学 Q1 CHEMISTRY, PHYSICAL
B. Wojciechowski
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引用次数: 60

Abstract

Abstract Catalytic cracking has reached technological maturity without the benefit of a fundamental understanding and quantification of its elementary processes. Without this understanding, advances in this field have become increasingly rare and will be even more difficult to achieve in the future. This article offers a basis for the development of a fundamental understanding of catalytic cracking. It ties together all of the principal phenomena in catalytic cracking and lays a foundation for their quantification on the basis of the following postulates. 1. All important processes involved in the suite of reactions which fall under the generic name of “catalytic cracking” proceed via the mediation of surface-resident ions. 2. These ions undergo only two types of reactions and produce all the major gas-phase products: (a) Bimolecular disproportionations with neutral gas-phase molecules, or with neutral portions of neighboring carbenium ions, via the formation of pentacoordinated carbonium ion intermediate...
催化裂化反应机理:量化活性、选择性和催化剂衰变
摘要催化裂化在没有对其基本过程进行基本理解和量化的情况下已经达到了技术成熟。如果没有这种认识,这一领域的进展将变得越来越罕见,而且在未来将更加难以实现。本文为发展对催化裂化的基本认识提供了基础。它把催化裂化的所有主要现象联系在一起,并在下列假设的基础上为它们的量化奠定了基础。1. 在统称为“催化裂化”的一系列反应中所涉及的所有重要过程都是通过表面驻留离子的中介进行的。2. 这些离子只经历两种类型的反应并产生所有主要的气相产物:(a)与中性气相分子或邻近的中性部分碳离子通过形成五配位碳离子中间体而发生双分子歧化。
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来源期刊
CiteScore
22.30
自引率
2.80%
发文量
29
期刊介绍: Catalysis Reviews is dedicated to fostering interdisciplinary perspectives in catalytic science and engineering, catering to a global audience of industrial and academic researchers. This journal serves as a bridge between the realms of heterogeneous, homogeneous, and bio-catalysis, providing a crucial and critical evaluation of the current state of catalytic science and engineering. Published topics encompass advances in technology and theory, engineering and chemical aspects of catalytic reactions, reactor design, computer models, analytical tools, and statistical evaluations.
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