Chemical processing cycle selection

Vulcani2ation is a chemical process for improving an elastomer compound s performance. However, in most cases not all of the desired properties reach their optimum levels simultaneously. One of the mbber compounder s key responsibiHties is to achieve a balance of the most important property requirements by the proper selection of cure system (chemical) and time—temperature cure cycle (physical). 

Monitoring pollutants in a variety of composition ranges in motor vehicle and chemical process exhaust gases is a major area of research in pollution abatement technology. Low-temperature CO oxidation catalysts are needed for zero emission vehicles, CO gas sensors, selective oxidation of CO in H2 rich streams in fuel cell applications,1,2 and in closed-cycle C02 lasers used for remote sensing in space applications.3"5 Effective oxidation of CO during... 

One further approach to incorporating the principles of green chemistry into solvent selection with process redesign (beyond tables of which solvents are or are not acceptable) is to evaluate the chemical characteristics of the desired solvent (or the solvent it is replacing) within the life-cycle of the entire chemical process (21). In this analysis disposal economics and safety concerns become critical considerations. Once these factors are summed, including a similar evaluation of the solvent in question, the true environmental cost of the process is found. Based upon the results of the analysis, new information is gained toward selection of the appropriate solvent or chemical procress. 

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