Premium
Calcium Carbide Looping System for Acetaldehyde Manufacturing from Virtually any Carbon Source
Author(s) -
Rodygin Konstantin S.,
Lotsman Kristina A.,
Ananikov Valentine P.
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202000760
Subject(s) - acetaldehyde , chemistry , calcium carbide , carbide , butanol , reagent , organic chemistry , hydrolysis , carbon fibers , solvent , catalysis , distillation , yield (engineering) , ethanol , ether , chemical engineering , materials science , metallurgy , composite number , engineering , composite material
A vinylation/devinylation looping system for acetaldehyde manufacturing was evaluated. Vinylation of iso ‐butanol with calcium carbide under solvent‐free conditions was combined with hydrolysis of the resulting iso ‐butyl vinyl ether under slightly acidic conditions. Acetaldehyde produced by hydrolysis was collected from the reaction mixture by simple distillation, and the remaining alcohol was redirected to the vinylation step. All the inorganic co‐reagents can be looped as well, and the full sequence is totally sustainable. A complete acetaldehyde manufacturing cycle was proposed on the basis of the developed procedure. The cycle was fed with calcium carbide and produced the aldehyde as a single product in a total preparative yield of 97 %. No solvents, hydrocarbons, or metal catalysts were needed to maintain the cycle. As calcium carbide in principle can be synthesized from virtually any source of carbon, the developed technology represents an excellent example of biomass and waste conversion into a valuable industrial product.