Ptt Global Chemical Public Company Limited

Myriant Corporation

Pttgc Innovation America Corporation

Rajesh Dasari

Ramnik Singh

Yuriy Roman-Leshkov

Montgomery Alger

Cenan Ozmeral

Thidarat Tosukhowong

Yu Noda

Robert M Rioux

Vijay Gnanadesikan

Bin Wang

Manav Mistry

Zachary Wilson

Described herein are solid acid catalysts and the methods for catalytically preparing &#x3b1;,&#x3b2;-unsaturated carboxylic acids and/or esters thereof. In one aspect, a zeolite catalyst may be used. The catalyst may, in certain embodiments, be modified to improve the selectivity and/or conversion of a reaction. For instance, a catalyst may be modified by ion exchange to achieve a desirable acidity profile in order to achieve high level of conversion of reactants and selectivity for desirable products of the catalytic reaction. In another aspect, a variety of feed stocks (e.g., starting compositions) may be used including an &#x3b1;-hydroxycarboxylic acid, an &#x3b1;-hydroxycarboxylic acid ester, a &#x3b2;-hydroxycarboxylic acid, a &#x3b2;-hydroxycarboxylic acid ester, cyclic esters thereof (e.g., lactide), and combinations thereof.

Method to produce acrylic acid with acetaldehyde as the main by-product

The present invention is in the field of producing bio-based commodity organic chemicals such as bio-acrylic acid, bio-acrylonitrile, and bio-1,4-butanediol using renewable carbon sources as feedstock. In the first stage of the present invention, bio-1,3-propanediol is derived from renewable carbon sources through microbial fermentation. In the second stage of the present invention, bio-1,3-propanediol is converted into bio-acrylic acid or bio-acrylonitrile or bio-1,4-butanediol.

Process for manufacturing acrylic acid, acrylonitrile and 1,4-butanediol from 1,3-propanediol

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Lincoln, MA, United States of America

Rajesh Dasari