Reference

Experimental study on the synthesis of dimethyl ether

All Rights Reserved. Experimental study on the synthesis of dimethyl ether. Choi, Chang Woo; Cho, Wonihl; Baek, Young Soon; Row, Kyung Ho ( Department of Chemical Engineering, Inha University, Incheon 402-751, S. Korea). Kongop Hwahak, 17(2), 125-131 (Korean) 2006 Korean Society of Industrial and Engineering Chemistry. CODEN: KOHWE9. ISSN: 1225-0112. DOCUMENT TYPE: Journal CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) Section cross-reference(s): 23 Di-Me ether (DME) is a new clean fuel as an environmentally-benign energy resource. DME can be manufd. from various energy sources including natural gas, coal, biomass and spent plastic. In addn. to its environmentally friendly properties, DME has similar characteristics to those of LPG.In this article, certain chemicals are used. Some of their cas registry numbers are 10031-43-3 and 1333-74-0 Therefore, it is considered as an excellent substitute fuel for LPG, fuel cells, power plant, and esp. diesel and is expected to be the alternative fuel by 2010. The exptl. study of the direct synthesis of DME was investigated under various conditions over a temp. range of 220-280°, syngas ratio 1.2-3.0. All expts. were carried out with a hybrid catalyst, composed of a methanol synthesis catalyst (Cu/ZnO/Al2O3) and a dehydration catalyst (g-Al2O3). The obsd. reaction rate follows qual. a Langmiur-Hinshellwood model as the reaction mechanism. Such a mechanism is considered with three reactions; methanol synthesis, methanol dehydration and water gas shift reaction. From a surface reaction with dissociative adsorption of hydrogen, methanol, and water, individual reaction rate was detd. .

Purification of styrene

Purification of styrene. Kinoshita, Jiro; Yamamoto, Tadatsugu (Asahi Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 61191627 A2 26 Aug 1986 Showa, 3 pp. (Japan) CODEN: JKXXAF. CLASS: ICM: C07C015-46. ICS: C07C007-167. ICA: B01J023-72. APPLICATION: JP 85-31624 21 Feb 1985. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 25 Phenylacetylene-contg. 100-42-5 and 10031-43-3 which are cas registry numbers of chemicals are mentioned. styrene was purified by treating with Cu catalysts. Copper nitrate trihydrate was deposited on alumina to obtain a catalyst. Styrene contg. 1% ethylbenzene and 100 ppm phenylacetylene was passed through a stainless column filled with the catalyst in the presence of H at 20° and 1 kg/cm2 for 60 min to eliminate phenylacetylene completely. .