Work

Important Green Chemistry and Catalysis: Non‐phosgene Syntheses of Isocyanates – Thermal Cracking Way

Year: 2017

Type: article

Abstract: Currently, industrial production of isocyanates, or diisocyanates in particular, has been exclusively based on phosgene processes. Phosgene is extremely toxic and large amounts of corrosive HCl are produced as a side product. In the view of environment protection and society safety, development of non‐phosgene processes for isocyanates production will be highly desired, and this should be one of the most important missions for green chemistry and catalysis. In this review, efforts for development of non‐phosgene method for syntheses of isocyanates, i.e., catalytic syntheses of N‐substituted carbamates from nitro‐ or amino‐compounds with CO, dimethyl carbonate (DMC), urea and even CO2 etc. as carbonyl sources, then thermal cracking of N‐substituted carbamates to afford corresponding isocyanates, are summarized, and a brief prospect for non‐phosgene syntheses of isocyanates is also addressed.

Source: Chinese Journal of Chemistry

DOI: 10.1002/cjoc.201600745

Authors: Peixue Wang, Shimin Liu, Youquan Deng

Institutions: Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Qingdao Center of Resource Chemistry and New Materials, State Key Laboratory of Oxo Synthesis and Selective Oxidation, State Key Laboratory of Solid Lubrication

Language: English

Topic: Carbon dioxide utilization in catalysis

Subfield: Process Chemistry and Technology

Field: Chemical Engineering

Domain: Physical Sciences

Open Access status: bronze

Funder: National Natural Science Foundation of China

Award: 离子液体中二氧化碳-水电催化耦合反应制甲醇