Encyclopedic Dictionary of Named Processes in Chemical Technology, 4th Edition

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TAC-9 [Toray Advanced Catalyst] A catalytic process for making mixed xylenes from mixed aromatic

hydrocarbons. Developed by Toray Industries and now licensed exclusively to UOP. Three commercial units

were operating in 2005.

Oil Gas J., 1998, 96(48), 35.

Eur. Chem. News, 1998, 69(1837), 35.

Taciuk See carbonization.

Tainton A metallurgical process in which suldes are converted to sulfates by heating in a controlled quantity

of air, and the sulfates so produced are dissolved in water. Used for removing zinc from silver and lead ores.

Takahax A variation of the *Stretford process for removing hydrogen sulde from gas streams, in which

naphthaquinone sulfonic acid is used in place of anthraquinone disulfonic acid. Four variants have been

devised: types A and B use ammonia as the alkali; types C and D use sodium hydroxide or carbonate. Developed

by the Tokyo Gas Company and licensed in the United States by the General Electric Environmental Services.

Many plants are operating in Japan.

Hydrocarbon Process. Int. Ed., 1975, 54(4), 105.

Kohl, H.L. and Nielsen, R.B., Gas Purication, 5th ed., Gulf Publishing Co., Houston, TX, 1997, 765.

Takasago A catalytic process for the enantioselective isomerization of allylic amines. The catalyst is a chiral rhodium

complex. Used in the manufacture of (−) menthol. Named after Takasago International Corporation, the Japanese

company that commercialized the process in 1983. Nobel prizewinner R. Noyori was employed by that company.

Ojima, I., ed., Catalytic Asymmetric Synthesis, VCH Publishers, New York, 1993, 42.

Sheldon, R.A., Arends, I., and Hanefeld, U., Green Chemistry and Catalysis, Wiley-VCH, Weinheim, Germany, 2007, 36.

Wikipedia, The Free Encyclopedia. Takasago International Corporation. Revised 17 Jul 2013. Retrieved 22 Jul 2013.

Talaoc A process for decolorizing cane sugar syrup by precipitating the coloring impurities with a long-chain

quaternary ammonium salt. Invented in 1967 by M.C. Bennett at Tate and Lyle, United Kingdom.

British Patent 1,224,990.

U.S. Patent 3,698,951.

Talalay A process for making foam rubber. The foaming gas is either carbon dioxide or oxygen generated

from hydrogen peroxide and an enzyme. After foaming, the latex particles are coagulated by freezing and

introducing carbon dioxide. Invented by L. Talalay at the B.F. Goodrich Company in 1959. See also Dunlop.

U.S. Patent 2,984,631.

Madge, E.W., Latex Foam Rubber, John Wiley & Sons, New York, 1962.

Talbot A semicontinuous steelmaking process that combines the *Bessemer and *Open Hearth processes.

Molten pig iron from a Bessemer converter is poured into an Open Hearth furnace containing fresh ore and

lime. Impurities in the pig iron oxidize and enter the slag. The process improves the yield of steel and the

throughput of the plant. Introduced by B. Talbot at Pencoyd, PA, in 1900 and subsequently adopted in Europe.

Barraclough, K.C., Steelmaking 1850–1900, The Institute of Metals, London, U.K., 1990, 283.