autocatalysis

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Related to autocatalysts: autocatalytic

autocatalysis

[¦ōd·ō·kə′tal·ə·səs]
(chemistry)
A catalytic reaction started by the products of a reaction that was itself catalytic.
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.
LONDON -- A substantial reduction in supplies, as well as lower volumes of autocatalyst recycling, will move the platinum market from surplus to deficit in 2012, according to Johnson Matthey in "Platinum 2012 Interim Review", released today.
On the demand side, palladium is less affected by European automobile demand because it is used more intensively in the autocatalysts of gasoline-powered engines which are more prevalent in the US and developing countries.
Platinum Supply & Demand (2011-2013, '000 oz) Supply 2011 2012 2013 South Africa 4,860 4,090 4,120 Russia 835 800 780 North America 350 310 315 Zimbabwe 340 340 400 Others 100 110 125 Total Supply 6,485 5,650 5,740 Demand Autocatalysts 3,185 3,190 3,125 Jewelry 2,475 2,780 2,740 Industrial 1,975 1,605 1,790 Investment 460 455 765 Recycling -2,060 -2,040 -2,075 Total Demand 6,035 5,990 6,345 Stocks 450 -340 -605 Source: Johnson Matthey's Platinum 2013 Interim Review
Autocatalysts, used to clean exhaust fumes, account for more than half of global platinum use.
Platinum should also be a safe bet, partly because of US demand for autocatalysts, Alliance reckons.
Recovery of platinum from spent autocatalysts rose by 4.
Such R&D progress in autocatalysts is expected to pave the way to the widespread use of such low CRMs content materials in other catalytic applications.
As chiefly industrial metals used in autocatalysts, platinum and palladium are more exposed than gold to the economic cycle, and have suffered from a lack of car demand in recent years.
This was despite a slowdown in global auto production, for which Johnson Matthey produces autocatalysts.
Matthey is braced for an 11% drop in global car production in the period, resulting in reduced demand for autocatalysts, but it said the stronger dollar and cost efficiencies should help offset some of the slowdown.