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Purified terephthalic acid (PTA) process

A successful collaboration between Johnson Matthey and Dow has achieved a breakthrough PTA process offering improved economics, competitiveness and reliability while delivering a quality PTA product.

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Oxidation technology

In terms of organic chemistry, oxidation is defined as a reaction which causes carbon to lose electron density. This can be caused by a carbon atom forming a bond with a more electronegative atom (e.g. oxygen, nitrogen), or breaking a bond with a less electronegative atom (e.g. hydrogen).

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Butanediol BDO THF GBL DMS process, Hydrogenolysis and Esterification technology

Johnson Matthey is the leading technology provider for butanediol plants worldwide. The DAVY™ butanediol process can produce in a single reaction train, varying ratios of three products; 1,4 butanediol (BDO), tetrahydrofuran (THF), Di-methyl succinate (DMS) and gamma butyrolactone (GBL). Hydrogenolysis is a reaction where hydrogen is added to a compound and breaks that compound’s bonds, forming two molecules as a result. Johnson Matthey's DAVY™ hydrogenolysis technology reacts hydrogen gas (H2) with a vapour-phase carbonyl compound. Esters are organic compounds characterized by the RCOOR’ functional group, and are most commonly derived from the reaction of carboxylic acids with alcohols.

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Dehydrogenation technology

While various dehydrogenation pathways exist for different compounds, Johnson Matthey's DAVY™ technology focusses on alcohol dehydrogenation to yield an ester product.

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