Phosphotungstic acid catalysed bioethylene synthesis under industrially relevant conditions

Abstract

Among the different routes of ethylene production, the most plausible way to obtain it from renewable sources nowadays is the dehydration of bioethanol, which can be obtained from biomass or...

In-Depth Understanding of Highly Active Silicotungstic Acid Catalysts for Ethanol Dehydration to Ethylene under Industrially Favorable Conditions

“…Various acid catalysts, including oxides, − zeolites, − and heteropolyacid (HPA), − are active for the ETE process. Among these catalysts, the alumina-based catalysts are predominantly used in industrial ethanol dehydration to ethylene, operated at 300–500 °C under atmospheric pressure.…”

RSM optimization of Friedel–Crafts C-acylation of para-fluorophenol over the catalysis of phosphomolybdic acid encapsulated in MIL-53 (Fe) metal organic frameworks

“…21 In particular, supported phosphomolybdic acid catalysts have been used in various organic reactions, including esterication, transesterication, aldol condensation, Friedel-Cras acylation, etc. [22][23][24][25][26][27][28] We have just recently achieved the synthesis of a phosphomolybdic acid-based catalyst that is prepared by encapsulation of phosphomolybdic acid groups in the MIL-53 (Fe) MOF pores by employing a simple one-pot approach. 11 This acid was characterized as having a high level of thermal stability, a large surface area, efficient catalytic activity, and reusability.…”

Synthetic Strategies of Supported Pd-Based Bimetallic Catalysts for Selective Semi-Hydrogenation of Acetylene: A Review and Perspectives

“…Ethylene is one of the most important and largest bulk chemicals in volume in the chemical industry, which is mainly used in the large-scale production of polyethylene (PE), polyvinyl chloride (PVC), ethylene oxide/ethylene glycol(EO/EG), ethylbenzene, ethanol, vinyl acetate, acetaldehyde and other chemical substances [ 1 , 2 ]. Therefore, the global production volume of ethylene production has reached more than 210 Mt in 2021 alone, which is expected to grow even further at a rate of more than 3% with the increasing demand for the downstream derivatives of ethylene [ 2 , 3 ]. Most of ethylene is currently obtained by cracking petroleum hydrocarbons (light hydrocarbons from natural gas processing plants, such as ethane, as well as processed products and secondary processed oil from refineries, such as naphtha and hydrocracking gasoline) [ 1 , 4 ].…”

“…The trace amount of C 2 H 2 , easily and irreversibly deactivates the Ziegler–Natta catalysts of ethylene polymerization, which sharply degrades the eventual quality of the ethylene-derived polymers. In addition, it also easily forms explosive oligomers, which brings safety risks to the downstream reaction systems [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. In this context, the acetylene concentration is required to be removed to less than 5 ppm to meet the downstream production demand [ 1 , 4 , 5 , 8 ].…”