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Aromatic isomerization catalyts
Bavaria. Through the OATS process, thiophenes are catalytically transformed into high-boiling compounds that can be removed from the gasoline stream by fractionation. The 260,000 bbl/day refinery can yield 15,000 bbl/day of gasoline with less than 10 ppm of sulfur. Sulphur, Jan/Feb 2002, (278), 8
Packing a bigger punch to sock SOx Hamon Research-Contrell of Somerville, NJ, is offering a patented two-step process that exhibits higher removal efficiencies as compared to traditional semi-dry scrubbing, which requires recycling large volumes of fluid to achieve efficiencies of more than 90%. The patented process, which is called DeSOx, has a removal efficiency of more than 95% without recycling. It also does not need HCI or a hygroscopic additive for removal but utilises a liquid quench or lime for eliminating most of the sulfur oxide. The dry lime helps produce a liquid micro-environment that serves as a catalyst for the adsorption of the sulfur oxide and promotes neutralisation. Chemical Engineering Progress, Jan 2002,98
(l), 13
Eolys diesel additive now in production Rhodia Electrolysis & Catalysis is organising the official inauguration of a new production unit devoted to the Eolys additive. The system was developed by Peugeot-Citroen and involves the additive used in conjunction with a particulate filter. The system is now recognised as a leading reference in automotive pollution control equipment in diesel vehicles for the general public. Press release from Rhodia, La Fiochelle, France. Tel: 33(0)1 55 38 42 51. Website: http://www.rhodia.com (22 Jan 2002)
Nippon Ketjen markets ultra deep desulfurization catalysts Nippon Ketjen has launched an ultradeep desulfurization catalyst for diesel fuel (KF 757 H). There is a brief discussion of the properties of the new product. Japanese demand for this type of catalyst is put at 2000APRIL
2002
3000 tonne/y, of which the company aims for a 60% market share. Japan Chemical Week, 14 Feb 2002,43
(2159), 3
silicates made by co-hydrolysing a a molybdate and an alkyl silicate and calcining the resulting gel. US 6,355,856, 12 Mar 2002, Agip Petroli, Rome, Italy and Eni Technologies, San Donato Milanese, Italy
New process hydrodechlorinates selectively
Aromatic isomerization catalyts
A plant for processing CFCs is to be erected in Schwarzheide, Germany, in 2001. A start-up company will establish itself at BASF’s site. The plant is due onstream next year and will process 100 tonne/y CFCs. The CFCs will be “cracked” with a selective catalyst to give a reusable products. CFC’s have mostly been burnt until now. Selective hydrodechlorination replaces heavy halogens such as chlorine and bromine with hydrogen. This yields new refrigerants. Thus dichlorodifluoromethane, R12b, and chlorodifluoromethane yield difluoromethane. Chloropentafluoroethane gives pentafluoroethane. C$tnzhe
Rundschau, 22 Feb 2002,55
(4), 10 (in
Catalysts for isomerizing aromatic C, mixtures in favour of pxylene are pentasil zeolites containing platinum and bound with silica. US 6,355,853, 12 Mar 2002, UOP, Des Plaines, IL, USA
Oxidative dehydrogenation catalyst The catalyst is a mixed oxide of Ni, Nb, and Ta in specified proportions. The specification does not reveal how the composition was obtained, but because the invention comes from Symyx the presumption is that the composition was derived combinatorially. The catalyst is very effective in converting ethane to ethylene. US 6,355,854, 12 Mar 2002, Symyx Technologies, Santa Clara, CA, USA
Cyanide destruction lnco Technical Services and Degussa have jointly developed a new cyanide destruction process. The technology will allow the gold mining sector to meet the required effluent limits at reduced capital and operating cost. European Chemical News, 25 Feb 2002,76
(1994), 27
PATENTS Optimised esterification
This patent describes catalysts for carbonylating aromatic hydroxy compounds to produce intermediates for making polycarbonate resins. The catalysts are all compounds of iron. The specification specifically excludes the use of compounds of the platinum metals “thereby effectively insulating the process from the volatile market for these elements.” US 6,355,824, 12 Mar 2002, General Electric Co, Schenectady, NY
In the manufacture of plasticizer esters, the speed and completion of reaction are improved if the process is conducted in two stages. After most of the product water has been removed, a second batch of catalyst is added and the reaction completed. The catalysts are typically organic titanium compounds and different ones may be chosen for each of the stages. US 6,355,817, 12 Mar 2002, ExxonMobil Patents, Houston, TX, USA
Catalysts for making aromatic carbonates
Chemical
Alkane isomerization catalysts Catalysts for isomerizing linear alkanes (C, - C,,) are molybdenum
BOOKSHELF High pressure process technology: fundamentals and applications A multi-authored international monograph. Not focused on catalysts, but having useful sections on reactors for olefin polymerization, and on slurry catalytic reactors. The SPHERIPOL and Hydrar processes are described in some detail. A Bertucco and G Vetter (eds), 2001, Elsevier, Amsterdam, ISBN o-464-50498-2, 659 pp
7
Packing a bigger punch to sock SOx Hamon Research-Contrell of Somerville, NJ, is offering a patented two-step process that exhibits higher removal efficiencies as compared to traditional semi-dry scrubbing, which requires recycling large volumes of fluid to achieve efficiencies of more than 90%. The patented process, which is called DeSOx, has a removal efficiency of more than 95% without recycling. It also does not need HCI or a hygroscopic additive for removal but utilises a liquid quench or lime for eliminating most of the sulfur oxide. The dry lime helps produce a liquid micro-environment that serves as a catalyst for the adsorption of the sulfur oxide and promotes neutralisation. Chemical Engineering Progress, Jan 2002,98
(l), 13
Eolys diesel additive now in production Rhodia Electrolysis & Catalysis is organising the official inauguration of a new production unit devoted to the Eolys additive. The system was developed by Peugeot-Citroen and involves the additive used in conjunction with a particulate filter. The system is now recognised as a leading reference in automotive pollution control equipment in diesel vehicles for the general public. Press release from Rhodia, La Fiochelle, France. Tel: 33(0)1 55 38 42 51. Website: http://www.rhodia.com (22 Jan 2002)
Nippon Ketjen markets ultra deep desulfurization catalysts Nippon Ketjen has launched an ultradeep desulfurization catalyst for diesel fuel (KF 757 H). There is a brief discussion of the properties of the new product. Japanese demand for this type of catalyst is put at 2000APRIL
2002
3000 tonne/y, of which the company aims for a 60% market share. Japan Chemical Week, 14 Feb 2002,43
(2159), 3
silicates made by co-hydrolysing a a molybdate and an alkyl silicate and calcining the resulting gel. US 6,355,856, 12 Mar 2002, Agip Petroli, Rome, Italy and Eni Technologies, San Donato Milanese, Italy
New process hydrodechlorinates selectively
Aromatic isomerization catalyts
A plant for processing CFCs is to be erected in Schwarzheide, Germany, in 2001. A start-up company will establish itself at BASF’s site. The plant is due onstream next year and will process 100 tonne/y CFCs. The CFCs will be “cracked” with a selective catalyst to give a reusable products. CFC’s have mostly been burnt until now. Selective hydrodechlorination replaces heavy halogens such as chlorine and bromine with hydrogen. This yields new refrigerants. Thus dichlorodifluoromethane, R12b, and chlorodifluoromethane yield difluoromethane. Chloropentafluoroethane gives pentafluoroethane. C$tnzhe
Rundschau, 22 Feb 2002,55
(4), 10 (in
Catalysts for isomerizing aromatic C, mixtures in favour of pxylene are pentasil zeolites containing platinum and bound with silica. US 6,355,853, 12 Mar 2002, UOP, Des Plaines, IL, USA
Oxidative dehydrogenation catalyst The catalyst is a mixed oxide of Ni, Nb, and Ta in specified proportions. The specification does not reveal how the composition was obtained, but because the invention comes from Symyx the presumption is that the composition was derived combinatorially. The catalyst is very effective in converting ethane to ethylene. US 6,355,854, 12 Mar 2002, Symyx Technologies, Santa Clara, CA, USA
Cyanide destruction lnco Technical Services and Degussa have jointly developed a new cyanide destruction process. The technology will allow the gold mining sector to meet the required effluent limits at reduced capital and operating cost. European Chemical News, 25 Feb 2002,76
(1994), 27
PATENTS Optimised esterification
This patent describes catalysts for carbonylating aromatic hydroxy compounds to produce intermediates for making polycarbonate resins. The catalysts are all compounds of iron. The specification specifically excludes the use of compounds of the platinum metals “thereby effectively insulating the process from the volatile market for these elements.” US 6,355,824, 12 Mar 2002, General Electric Co, Schenectady, NY
In the manufacture of plasticizer esters, the speed and completion of reaction are improved if the process is conducted in two stages. After most of the product water has been removed, a second batch of catalyst is added and the reaction completed. The catalysts are typically organic titanium compounds and different ones may be chosen for each of the stages. US 6,355,817, 12 Mar 2002, ExxonMobil Patents, Houston, TX, USA
Catalysts for making aromatic carbonates
Chemical
Alkane isomerization catalysts Catalysts for isomerizing linear alkanes (C, - C,,) are molybdenum
BOOKSHELF High pressure process technology: fundamentals and applications A multi-authored international monograph. Not focused on catalysts, but having useful sections on reactors for olefin polymerization, and on slurry catalytic reactors. The SPHERIPOL and Hydrar processes are described in some detail. A Bertucco and G Vetter (eds), 2001, Elsevier, Amsterdam, ISBN o-464-50498-2, 659 pp
7