Bharat Petroleum Corporation Limited

Indian Institute of Technology Delhi

Ananth Kishore Kumar Sontyana

Bharat Lakshman Newalkar

Shivanand Mukund Pai

Kamal Kishore Pant

Nikita Sharma

Lalit Kumar

Kuppusamy Munusamy

Sayanti Ghosh

Mahesh Wamanrao Kasture

An aspect of the present disclosure relates to a process for preparing a composite hydroalkylation catalyst including: (a) effecting impregnation of a hydrogenation metal on an inorganic oxide to form a metal impregnated inorganic oxide; (b) effecting calcination of the metal impregnated inorganic oxide to obtain a calcined metal impregnated inorganic oxide; (c) preparing a composite mixture comprising a molecular sieve, the calcined metal impregnated inorganic oxide and a binder; (d) preparing an extruded catalyst; and (e) effecting calcination of the extruded catalyst to obtain the composite hydroalkylation catalyst. The composite hydroalkylation catalyst prepared using this process affords dramatic improvement in conversion of mononuclear aromatic hydrocarbon and the yield of the hydroalkyled mononuclear aromatic hydrocarbon (e.g. CHB).

Hydroalkylation of mononuclear aromatic hydrocarbons to mono cycloalkyl aromatic hydrocarbons

The present invention provides a process for preparing a zeolite by hydrothermal heating of silica precursor and alumina precursor along with a combination of two structure-directing organic templates, N,N-dimethyl formamide and 1,6-diaminohexane in the presence of an alkali. The use of two structure-directing organic templates, not only reduces the crystallization time but also enables the preparation of more catalytically active ZSM-22 of submicron crystallite size. The present invention also provides a process of preparing a noble metal containing zeolite catalyst for hydroisomerization of long chain n-paraffins.

Method for the synthesis of a ZSM-22 zeolite, a metal containing zeolite and its application in hydromerization of long chain n-paraffins

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Uttar Pradesh, India

Ananth Kishore Kumar Sontyana