(1) In fact, zeolites are the main catalysts in petrochemical refineries today.(2) Incidentally, the term ‘pure essential oil’ (as claimed by the producers) is a misnomer because the highly toxic petrochemical solvent hexane is involved in the extraction process.(3) To implement the project, PTT must invest in the construction of a 6th gas separation plant to accommodate the natural gas demand for petrochemical production.(4) Whatever the classification system, scientists have yet to produce a fully biodegradable alternative to conventional petrochemical derived plastics, without compromising properties and cost.(5) Oil spills, petrochemical pollution, DDT, and toxic defoliants have rendered this appendix on the Caspian Sea's air, soil, and water almost beyond repair.(6) Under its petrochemical and plastics segment, Atofina is the world's third largest producer of polypropylene, eighth largest supplier of polyethylene and fourth largest producer of polystyrene.(7) Conoco is one of a number of companies in Texas and Louisiana along a 300-mile stretch of the Gulf of Mexico coast that houses the largest collection of petrochemical refineries and factories in the world.(8) Under the hood are fluid tanks, hoses, and plastic clips made of petrochemical polymers.(9) The rise in asthma cases in children has often been linked to fragrances and there is considerable evidence that toluene, one of the petrochemical ingredients of many perfumes, can cause asthma in previously healthy people.(10) Acetone is prepared by several routes, from petrochemical sources.(11) Just as suburban development was driving up the demand for gas in the 1960s, Exxon and Mobil used zeolites in petrochemical processes to convert crude oil to fuel while increasing purity and yield.(12) The ethyl group is found for example during the thermal degradation of alkanes as is encountered during various petrochemical processes.(13) Later this year, the Iraqi industry ministry is expected to begin placing sections of heavy industry, petrochemical plants, sugar refineries and other enterprises on the auction block.(14) Research and development efforts in the chemical industry are significantly more productive with the use of catalysis in fields such as fuel refining, petrochemical manufacturing, and environmental management.(15) And some of the most important inorganic compounds, such as sulphuric acid and ammonia, rely upon the petrochemical industry for their feedstocks.(16) In qualitative terms, industrial sites, such as smelters, cement factories, oil refineries, and petrochemical plants, can emit a wide range of volatile agents and particulate matter.
