autocatalysis

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autocatalysis

 [aw″to-kah-tal´ĭ-sis]
an increase in the rate of a chemical reaction in which a product of the reaction itself hastens or intensifies the rate.

au·to·ca·tal·y·sis

(aw'tō-kă-tal'i-sis),
A reaction in which one or more of the products acts to catalyze the reaction; after beginning slowly, the rate of such a reaction rapidly increases. Compare: chain reaction.
Synonym(s): autoactivation

autocatalysis

/au·to·ca·tal·y·sis/ (-kah-tal´ĭ-sis) catalysis in which a product of the reaction hastens the catalysis.

au·to·ca·tal·y·sis

(aw'tō-kă-tal'i-sis)
A reaction in which one or more of the products formed acts to catalyze the reaction; beginning slowly, the rate of such a reaction rapidly increases.
Compare: chain reaction

autocatalysis

catalysis in which a product of the reaction hastens or intensifies the catalysis.
References in periodicals archive ?
The company's main activities include the manufacture of autocatalysts, platinum process catalysts and speciality chemicals and the refining, fabrication and marketing of platinum group metals.
73 million ounces, driven by a return to positive net physical investment and higher autocatalyst purchasing, moving the palladium market into a deficit of 915,000 oz.
Purchasing strengthened in the core autocatalyst and industrial markets, which accounted for 94% of gross demand.
A 4 per cent contraction in platinum's use in autocatalyst applications represented a divergence from the broad trend of growing global vehicle production, explained by the weakness in platinum's key automotive market, Europe, coupled with the twin draw of substitution (to palladium in diesel applications) and thrifting the intensity of metal use.
Autocatalyst demand is expected to recover in 2006 and jewellery demand will continue rising, especially if palladium's popularity grows in China's two major cities, Beijing and Shanghai.
Johnson Matthey, which also trades in platinum group metals (PGMs), said the outlook for platinum demand was very strong, with increased use of the metal in autocatalysts - used to reduce pollution from cars and trucks - and higher demand for platinum jewellery in China and the United States.
2 million, helped by stronger paladium prices and continued growth in autocatalyst sales.
Gold regained its premium over platinum, with the autocatalyst metal struggling for traction as demand fears grew.
India is now said to represent an important market for autocatalyst company Johnson Matthey, which has a sales office in Birmingham and a colours and coatings business in Stoke-on-Trent.
The health of the car sector is a key driver for platinum group metals, which are used in autocatalyst manufacturing.
Autocatalyst sales were 11 per cent up on the previous year, driven by strong car sales and tightening emission standards in all the world's major car markets.
The major end use applications analyzed are Autocatalyst (net), Jewellery, Electrical, Chemical, Glass, Petroleum, and Others (include fuel cells, thermocouples, turbine blades, pharmaceutical and medical applications, investment (small), and military applications).