Nano-structured graphitic catalysts

Nano-structured graphitic catalysts

FOCUS accepted by a major European original equipment manufacturer (OEM) as part of an approved diesel Particulate Matter (PM) reduction system. Puri ...

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FOCUS accepted by a major European original equipment manufacturer (OEM) as part of an approved diesel Particulate Matter (PM) reduction system. Puri tech GmbH working with ESW’s catalyst engineers have incorporated the company’s High Performance DOC into an innovative PM emissions control system. The complete system was designed specifically for first fit and retrofit applications on the manufacturer’s diesel powered utility vehicles. The kit is designed to be installed by an authorized dealer as a direct replacement retrofit kit of the factory installed standard muffler and is also being made available as an OEM factory option. ESW’s proprietary catalyst was selected as a component for the development of the system due to the technologies associated high PM reductions and robust durability properties. The ESW catalysed substrate provides the initial PM reductions and assists the overall system to reduce in excess of 90% of the engines PM output. Although the system was designed initially for vehicle applications with low engine temperature operating cycles, it provides optimum PM emission reductions at all engine operating temperatures. With headquarters in Concord, ON, Environmental Solutions Worldwide Inc is a publicly traded company engaged through its subsidiaries ESW Canada Inc and ESW America Inc in the design, development, ISO 9001:2000 certified manufacturing, and sales of environmental technologies. Puri tech GmbH markets and sells emission reduction products for on- and offroad applications primarily in the European market since 2001. Press release from: Environmental Solutions Worldwide Inc, 132, Penn Avenue, Telford, PA 18969, USA. Tel: +1 215 721 2101. Fax: +1 215 721 2192. Website: http://www.cleanerfuture.com (23 Jun 2005)

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expected to yield 300,000 bbl/day of liquid fuels by 2011. Shell’s GTL plant in Bindle, Malaysia, is presently the biggest such plant, bringing in 14,700 bbl/day. TCE (formerly The Chemical Engineer), Jun 2005, (768), 9

PATENTS Polyoxometallate partial oxidation catalyst Niobium polyoxomolybdate, activated by heating in pyridine vapour, is an effective catalyst for the partial oxidation of lower aliphatic hydrocarbons. Acrylic acid has been obtained from propylene, maleic acid from butene. US 6,914,029, Mark Davis et al, CalTech, Pasadena, CA, USA, 5 Jul 2005

Mixed metal oxide partial oxidation catalysts Various mixed metal oxides, eg those of Mo + V + Nb (see previous patent abstract), containing also Te or Sb, made by a sol-gel process, are effective in catalysing the oxidation of propane to acrylic acid. US 6,914,150, Rohm & Haas Co, Philadelphia, PA, USA, 5 Jul 2005

Nano-structured graphitic catalysts Graphitic materials are made by pyrolysing syngas or ethylene over metal powders. The products consist of nano-sized graphite platelets aligned on the metal surfaces. They have been shown to catalyse a variety of simple gas reactions. US 6,913,740, Catalytic Materials Inc, Holliston, MA, USA, 5 Jul 2005

Selective dimerization of isobutene Trimethylpentenes are useful as intermediates and as octane enhances in petrol. They can be made from the isobutene present in a mixed C4 olefin stream in an oil refinery. The preferred catalyst is zeolite beta in the proton form. US 6,914,166, ExxonMobil Chemical Patents Inc, Houston, TX, USA, 5 Jul 2005

BOOKSHELF Catalysis, Vol 18 A review of recent literature, including the following topics: • Vanadium posphates for n-butene oxidation • Solid catalysts for water treatment and remediation • Supported metal oxide adsorbents and catalysts made from polynuclear metal complexes • SCR technology for controlling NOx emissions from internal combustion engines • Catalysts for solid oxide fuel cells. J J Spivey (ed), (2005), RSC, Cambridge, UK, ISBN 085404-234-2, 198 pp, £249.50

Activation and functionalization of C-H bonds Developed from a symposium sponsored by the Division of Inorganic Chemistry, ACS, held at the National Meeting of the ACS in Orlando, FL, in Apr 2002. A more accurate title would have been “Activation and functionalization of C-H bonds (particularly of aliphatic groups), with emphasis on homogeneous systems that involve the formation of metalcarbon bonds”. K I Goldberg and A S Goldman (eds), 2004, American Chemical Society, Washington DC, Symposium Series # 885, ISBN 0-8412-3849-9, 440 pp, $88

Qatar clean diesel plan to cut smog Chlorine dioxide generated catalytically Royal Dutch/Shell along with Chevron and ExxonMobil is among the major contributors in a $20 bn investment for a new clean diesel project in the Ras Laffan industrial city in Qatar. The plant will convert natural gas into clean-burning diesel fuel using cobalt and should reduce smog problems in Qatari cities. It is

AUGUST 2005

Aqueous sodium chlorite is converted to chlorous acid by ion exchange. Contacting this solution with a solid catalyst, eg platinum on a ceramic support such as MACROLITE, generates chlorine dioxide gas, US 6,913,741, Halox Technologies Inc, Bridgeport, CT, USA, 5 Jul 2005

Modern rhodium-catalysed organic reactions A multi-authored international monograph with contributions by 31 authors from 5 countries, predominantly the USA. P A Evans (ed), 2005, ISBN 3-527-30683-8, 473 pp, £105

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