Recently, the team of Liu Zhongmin and Tian Peng from the National Engineering Laboratory of Methanol to Olefin, Dalian Institute of Chemical Physics, Chinese Academy of Sciences published a progress report entitled Recent Progress in Methanol-to-Olefins (MTO) Catalysts.
Methanol to olefins (MTO), as an important C1 chemical reaction, provides an efficient way to produce basic chemicals for non-petroleum resources such as coal and natural gas. MTO catalyst is one of the key elements in the development of this process, which directly determines the process flow, reactor form, and MTO technology profitability. Since 2010, the team led by Liu Zhongmin has completed the one-million-ton industrialization and industrialization of methanol-to-olefin (DMTO) technology, which has promoted the development of China's coal-to-olefin strategic industry. In recent years, the team ’s research work has focused on the in-depth understanding of the reaction mechanism of methanol to olefins, the development of high-performance new-generation DMTO catalysts and new-generation DMTO technology. The progress report first reviewed the research and development process of the DMTO catalyst at Dalian Chemical Institute, and proposed the scientific problems and challenges facing the development of high-performance MTO catalysts; based on the understanding of the reaction mechanism of methanol to olefins, the analysis and summary of optimized MTO catalysts, especially SAPO-34 molecular sieve catalyst is a feasible approach and the latest research progress. The report also introduces the research progress of molecular sieve catalysts with high propylene or high ethylene selectivity. Finally, the report summarizes and prospects the development prospects and efforts of MTO catalysts.
In recent years, the research team has developed a variety of new methods for the synthesis of SAPO molecular sieve catalysts. The first amine heat synthesis of SAPO molecular sieve was carried out, and a variety of new template agents for synthesizing SAPO-34 were found (J. Mater. Chem. A, 2013); strategic synthesis such as Top-down method, double template method and reconstruction method were developed Nanocrystalline and multi-stage porous SAPO molecular sieve with special morphology (Chem. Commun., 2014; J. Mater. Chem. A, 2015; Chem. Commun., 2016; Chem. Commun., 2017; Chem. Commun. , 2018), significantly improving the MTO catalytic performance of molecular sieves (ACS catalysis, 2015; ACS catalysis, 2019). Based on the above work foundation, the research team completed the research and development of a new generation of DMTO catalyst, and achieved industrial production in October 2018, and successfully applied it to a million-ton DMTO plant, showing a significantly improved yield of low-carbon olefins.
The above work was funded by the National Natural Science Foundation of China and the Frontier Science Key Research Project of the Chinese Academy of Sciences, and was recently published in Advanced Materials.
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