Laporte

32 Laponite Nao.gMgj 4Li 4Si 02o(OH)4 from Laporte Properties BET specific surface area 300 m /g, particle size 20 nm [143]. 

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A number of per-acids and organic derivatives of hydrogen peroxides are manufactured by Laporte Chemicals Ltd., Luton, England. 

Here, even and odd refer to the arithmetic sum over all the electrons and this selection mle is called the Laporte mle. An important result of this is that transitions are forbidden between states arising from the same configuration. For example, of the terms given in Equation (7.18) arising from the configuration of the carbon atom,... 

Laporte rule because they are magnetic dipole transitions the rule applies only to electric dipole transitions. 

When you consider the selection rules, which are not particularly restrictive (see Section 7.1.6), governing transitions between these states arising from each configuration, it is not surprising that the electronic spectrum of an atom such as zirconium consists of very many lines. (Remember that the Laporte rule of Equation (7.33) forbids transitions between states arising from the same configuration.)... 

Dimethyl Ether. Synthesis gas conversion to methanol is limited by equiUbrium. One way to increase conversion of synthesis gas is to remove product methanol from the equiUbrium as it is formed. Air Products and others have developed a process that accomplishes this objective by dehydration of methanol to dimethyl ether [115-10-6]. Testing by Air Products at the pilot faciUty in LaPorte has demonstrated a 40% improvement in conversion. The reaction is similar to the Hquid-phase methanol process except that a soHd acid dehydration catalyst is added to the copper-based methanol catalyst slurried in an inert hydrocarbon Hquid (26). 

The first commercial-scale anthrahydroquinone autoxidation process in the United States was put into operation by E. I. du Pont de Nemours Co., Inc. (Memphis, Tennessee) in 1953, followed by EMC Corporation (West Virginia), LaPorte Chemicals, Ltd. (U.K.), Degussa (Germany), Mitsubishi-Gas Chemical Co. (Japan), and others. 

The triple salt is better known by the trademarks Caroat (Degussa), OXONE Monopersulfate Compound (Du Pont), and Curox (Laporte). It is also known as potassium caroate. It has been made on a commercial scale siace the 1950s, and the world market ia 1994 was several thousand tons. It is made commercially by Peroxid-Chemie (Germany), Degussa (Germany), Du Pont (United States), and Migas (Japan). In 1994, the United Kingdom price was J1.80/kg ( 2.67/kg). 

Product Bulletins, Laporte Organics-Aztec Peroxides-lnterox-Peroxid-Chemie GmbH, Houston, Tex., 1993. 

Honshu Chemical Industry (Japan) Laporte Performance Chemicals (UK) Mitsubishi Chemical (Japan)... 

GFS Chemicals Harcros Chemicals Honeywell Performance P C Interstate Chemical Laporte (UK)... 

Laporte Pigments North America and many non producers... 

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