Abstract

In this study, different reaction mechanisms and various theories including lumped kinetic models and detailed elementary step reaction mechanisms proposed for methanol to olefins and methanol to propylene (MTO/MTP) processes were comprehensively reviewed. Based on findings and authors’ interpretations, the most accurate and reliable reaction mechanisms were introduced. Afterwards, the most applicable catalysts employed for MTO/MTP processes were systematically compared. Various modified catalysts that had been appropriately prepared for enhancing the catalytic activity, increasing of light olefins selectivity and prolonging catalytic life-time were completely overviewed. Furthermore, the role of template materials in the performance of synthesized zeolite catalysts was completely investigated and their effects on morphology, catalytic activity and catalytic stability of provided samples were thoroughly discussed. The authors hope that the current review gives a deeper view for the investigations of MTO/MTP processes.

摘要

本研究对甲醇制烯烃和甲醇制丙烯 (MTO/MTP) 工艺提出的不同反应机理和各种理论，包括集总动力学模型和详细的基本步骤反应机理进行了全面综述。根据研究结果和作者的解释，介绍了最准确和最可靠的反应机制。随后，系统地比较了用于 MTO/MTP 工艺的最适用的催化剂。全面概述了为提高催化活性、增加轻质烯烃选择性和延长催化寿命而适当制备的各种改性催化剂。此外，还全面研究了模板材料在合成沸石催化剂性能中的作用及其对形貌的影响，对所提供样品的催化活性和催化稳定性进行了深入讨论。作者希望当前的评论能够为 MTO/MTP 流程的调查提供更深入的视角。