Dow Global Technolgoies LLC

Rohm and Haas Company

Wen-Sheng Lee

Kirk Walton Limbach

Victor J Sussman

Stephen W King

Christopher D Frick

Jeffrey A Herron

Daniel A Hickman

Sung-Yu Ku

D Wayne Blaylock

Daniel J Arriola

Wanglin Yu

David Gordon Barton

Alexey Kirilin

Dmitry A Krapchetov

Andrew T Heitsch

William G Worley

Dmitri A Kraptchetov

Beata A Kilos

Kurt D Olson

Mingzhe Yu

Jing L Houser

Paulami Majumdar

Le Wang

James E Elder

Ramzy Shayib

Embodiments of the present disclosure are directed towards methods of etherification including modifying a zeolite catalyst with phosphorus to provide a phosphorus modified zeolite catalyst; and contacting the phosphorus modified zeolite catalyst with an olefin and an alcohol to produce a monoalkyl ether.

Methods of etherification

Embodiments of the present disclosure are directed towards methods of etherification including modifying a zeolite catalyst with silica to provide a silica modified zeolite catalyst; and contacting the silica modified zeolite catalyst with an olefin and an alcohol to produce a monoalkyl ether.

A method including the step contacting an olefin, an alcohol, a metallosilicate catalyst and a solvent, wherein the solvent comprises structure (I): wherein Rand Rare each selected from the group consisting of an aryl group and an alkyl group with the proviso that at least one of Rand Ris an aryl group, further wherein n is 1-3.

Metallosilicate catalyst solvents for the formation of alkylene glycol monoalkyl ethers

A heterogeneous catalyst comprising a support and gold, wherein: (i) said support comprises titanium, (ii) said catalyst comprises from 0.1 to 5 wt % of gold, (iii) at least 90 wt % of the gold is in the outer 60% of catalyst volume, and (iv) particles of the catalyst have an average diameter from 200 microns to 30 mm; wherein weight percentages are based on weight of the catalyst.

Heterogeneous catalyst

A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein oxygen concentration at a reactor outlet is from 1 to 7.5 mol % and wherein pH at a reactor outlet is no greater than 7.5.

Method for production of methyl methacrylate by oxidative esterification using a heterogeneous catalyst

A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt % of the noble metal is in the outer 70% of catalyst volume, and wherein oxygen concentration at a reactor outlet is from 0.5 to 7.5 mol %.

A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt % of the noble metal is in the outer 50% of catalyst volume.

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Midland, MI, United States of America

Wen-Sheng Lee