Next Article in Journal
Climate Change and Air Pollution: Exploring the Synergies and Potential for Mitigation in Industrializing Countries
Next Article in Special Issue
Methanetrisulfonic Acid: A Highly Efficient Strongly Acidic Catalyst for Wagner-Meerwein Rearrangement, Friedel-Crafts Alkylation and Acylation Reactions. Examples from Vitamin E Synthesis
Previous Article in Journal
Opportunity and Problem in Context (OPiC): A Framework for Environmental Management
Article Menu

Export Article

Open AccessReview
Sustainability 2009, 1(1), 35-42; doi:10.3390/su1010035

On the Way to Improve the Environmental Benignity of Chemical Processes: Novel Catalysts for a Polymerization Process

Molecular Catalysis, Catalysis Research Center der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany
*
Author to whom correspondence should be addressed.
Received: 10 February 2009 / Accepted: 14 March 2009 / Published: 19 March 2009
(This article belongs to the Special Issue Green Chemistry for Environment and Health)
View Full-Text   |   Download PDF [138 KB, uploaded 24 February 2015]   |  

Abstract

An example for a process that can, in principle, be improved by the application of a catalyst is the synthesis of poly(2-methyl-propene)s (“polyisobutenes”), which are important for numerous industrial applications. Each year several 100,000 t are produced. The production of low-molecular weight polyisobutenes by means of cationic initiation by an excess of Lewis acids is well established. Typically, these initiators require the usage of solvents like chloroform, dichloromethane and ethylene and temperatures far below 0 °C (–100 °C in the case of ethylene as solvent). Solvent stabilized transition metal complexes with weakly coordinating counter anions overcome these drawbacks and thus are not only more efficient, but also more environmentally benign: they can be applied at ambient temperature and in non chlorinated solvents at low concentrations. View Full-Text
Keywords: Solvent ligands; weakly coordinating anions; transition metals; polymerization Solvent ligands; weakly coordinating anions; transition metals; polymerization
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Rach, S.F.; Kühn, F.E. On the Way to Improve the Environmental Benignity of Chemical Processes: Novel Catalysts for a Polymerization Process. Sustainability 2009, 1, 35-42.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top