METHOD FOR THE PRODUCTION OF POLYETHYLENE TEREPHTHALATE WITH A LOW CARBON FOOTPRINT
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United States of America Patent
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Oct 22, 2015
app pub date -
Nov 21, 2013
filing date -
Nov 23, 2012
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Abandoned
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Abstract
The present invention relates to a method for producing terephthalic acid from lignocellulosic biomass including the steps of pyrolysis of lignocellulosic biomass in the presence of a catalyst obtaining biochar, crude bio-oil and gases; collecting an aromatic fraction from the crude bio-oil and/or from the gases, extracting toluene from the aromatic fraction by distillation; converting the toluene to a p-tolualdehyde by catalyzed carbonylation; oxidation of the p-tolualdehyde in a liquid phase oxidation to tereph thalic acid.
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