Council of Scientific and Industrial Research

Other

Yogiraj Mansukhlal Badheka

Raksh Vir Jasra

Rajesh Shantilal Somani

Beena Tyagi

Jayalekshmy Ayyer

Pravinchandra Mahasukhray Oza

Virendra Bhikhabhai Patel

Jatin Rameshchandra Chunnawala

Vikram Vinodrai Thakkar

Mrunal Vinodbhai Sheth

Muthusamy Sengodagounder

Rakesh Vir Jasra

An ecofriendly process for acylation of an alkylated benzene derivative has increased selectively towards para position and comprises a step of reacting the alkylated benzene derivative with an acylating agent in the presence of nitrobenzene, dichlorobenze, dimethylsulfolane, and/or benzotrile, and a crystalline alumino silicate catalyst having general formula MO.AlO.xSiO.wHO, wherein M is an alkali cation, a rare earth cation, and/or a proton, wherein the Si/Al ratio is in the range of 5.5 to 20, wherein the step of reacting is performed at temperature between 80&#xb0; to 140&#xb0; C. for 5 to 25 hours. In a further step, the solid catalyst is separated from the reaction mixture of step, and in yet another step, the acylated alkyl benzene derivative is separated from the mixture.

Catalysed acylation of alkylated benzene derivatives

An environmentally friendly process for the production of finely divided calcium carbonate suitable for industrial application from a calcium carbonate-rich by-product of nitrophosphate fertilizer plant by adopting purification steps of thermal treatment, pulverization and coating using an emulsion of a fatty acid or it's a fatty acid derivatives.

Process for generation of finely divided calcium carbonate from calcium carbonate rich industrial by-product

This invention relates to a process for the preparation of acylated aromatic ethers, in particular the acylation of anisole (methoxybenzene) and veratrole (1,2-dimethoxybenzene) for the preparation of corresponding acylated aromatic ether, namely, p-methoxyacetophenone and 3,4-dimethoxyacetophenone respectively, using clay based heterogeneous catalysts, and their lanthanide exchanged forms at moderate temperature and pressure with high selectivity.

Clay based catalytic process for the preparation of acylated aromatic ethers

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Gujarat, India

Yogiraj Mansukhlal Badheka