lhe selective semi-hydrogenation of alkynes is highly relevant to the manufacture of petrochemicals and fine chemicals,and traditionally proceeded in a batch manner,facing the problems such as low degree of automation,poor efficiency and potential safety hazards.Recently,the progress in microchannel reactor technology has made it possible to conduct selective catalytic semi-hydrogenation of alkynes in continuous process,and essentially resolve the problems existing in batch process.In view of this,we intend to summarize the types of microchannel reactors and the categories of catalysts in the same type of reactor,and review the research progress of selective catalytic semi hydrogenation of alkynes in the microchannel reactor in recent years.The application of microchannel reactors including catalytic capillary reactor,packed bed reactor,honeycomb reactor and monolith reactor in the selective catalytic semi hydrogenation of alkynes has promoted the progress of technology and process in China's petrochemical industry.In conclusion,the miniaturization of equipment and integration of processes are in line with the needs of sustainable development and high technology development.As a new technology for chemical process intensification,the microchannel reactor technology will be widely used in the fields of chemistry,chemical industry,energy and environment.
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