Iowa State University Research Foundation, Inc.

Cornell University

Uchicago Argonne, LLC

Kumho Petrochemical

University of California

Northwestern University

Aaron David Sadow

Massimiliano Delferro

Gwanghoon Kwag

Kenneth R Poeppelmeier

Magali S Ferrandon

Hanbaek Lee

Bradley M Schmidt

Geoffrey William Coates

Marek Pruski

Susannah L Scott

Dong Eun Kang

Wenyu Huang

Anne M Lapointe

Frédéric A Perras

Xun Wu

Akalanka Tennakoon

Anne M LaPointe

George A Kraus

Gokhan Celik

Ryan Hackler

Robert M Kennedy

Aradhana Pindwal

Zachary Benjamin Weinstein

Uddhav Kanbur

A method of upcycling polymers to useful hydrocarbon materials. A catalyst with nanoparticles on a substrate selectively docks and cleaves longer hydrocarbon chains over shorter hydrocarbon chains. The catalyst includes metal nanoparticles in an order array on a substrate.

Catalytic polymer processing

Disclosed herein is a catalyst which comprises a silica core having an outer surface and a mesoporous silica shell having an outer surface and an inner surface with the inner surface being inside the outer surface of said mesoporous silica shell proximate to and surrounding the outer surface of said silica core. Wherein the outer surface of the mesoporous silica shell has openings leading to pores within the mesoporous silica shell which extend toward the outer surface of said silica core. The catalyst also includes catalytically active metal nanoparticles positioned within the pores proximate to said core, wherein the catalytic metal nanoparticles comprise about 0.0001 wt % to about 1.0 wt % of the catalyst. Also disclosed are methods of making the catalyst and using it to carry out a process for catalytically hydrogenolysizing a polyolefinic polymer.

Pore-encapsulated catalysts for selective hydrogenolysis of plastic waste

Disclosed herein is a process for the conversion of polymers, oligomers, or mixtures thereof into shorter alkanes, carboxylic acids, alcohols, alkyl halides or aldehydes. This process includes contacting the polymers, oligomers, or mixtures thereof with the compound of formula (I):Al(R)  (I)where Ris independently selected at each occurrence thereof from the group consisting of H, aryl, C-Calkyl, and C-Calkoxy, as a reaction mixture, in the presence of a catalyst selected from the group consisting of a transition metal catalyst, a lanthanide series metal catalyst, or combinations thereof.

Catalytic upcycling of polyolefins via versatile alkylaluminums

The present invention relates to a modified polymer having the structure of Formula (I) and Formula (IV): R, R, R, a, and n are as described herein and R, R', R&#x2033;, x, and k are as described herein and methods for preparation thereof. The present invention also relates to a compound having the structure of Formula (II):

End group functionalization agents for polydiene

A method of upcycling polymers to useful hydrocarbon materials. A catalyst with nanoparticles on a substrate selectively docks and cleaves longer hydrocarbon chains over shorter hydrocarbon chains. The nanoparticles exhibit an edge to facet ratio to provide for more interactions with the facets.

Catalytic upcycling of polymers

The present invention relates to a modified polymer having the structure of Formula (I) and Formula (IV): wherein A, R, R, R, a, and n are as described herein and wherein R, R', R&#x2033;, x, and k are as described herein and methods for preparation thereof. The present invention also relates to a compound having the structure of Formula (II): wherein A, R, R, R, a, and n are as described herein. The present invention also relates to a process for polymerizing unsaturated hydrocarbon monomers.

The present application relates to a process for preparation of a compound of Formula (I) and Formula (IV): wherein is as described herein; and wherein and R are as described herein.

Green, copper-catalyzed disproportionation of aromatic and heteroaromatic carboxylates to dicarboxylates

The present invention relates to processes for polymerizing unsaturated hydrocarbon monomers. The present invention also relates to a precatalyst having the structure of Formula (I):M{C(SiHAlk)}&#x2003;&#x2003;(I),and to a catalyst comprising the structure of Formula (II):MC(SiHAlk)X&#x2003;&#x2003;(II),and methods for preparation thereof.

Polymerization catalysts

Growing community of inventors

Ames, IA, United States of America

Aaron David Sadow