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Kazem Motahari

Academic rank: Assistant Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
Synthesis of Pd-Au catalyst by shell impregnation method utilized for the production of vinyl acetate monomer
Type
Presentation
Keywords
shell impregnation, Pd-Au catalyst, vinyl acetate
Year
2016
Researchers Kazem Motahari

Abstract

Practically all important chemical processes in the world are based on catalyst exploitation. Research into catalysis is a major field in applied science and involves many areas of chemistry, notably organometallic chemistry and materials science. The vinyl acetate monomer (VAM) production is an important catalyst process. The VAM utilized in the production of various polymers, such as polyvinyl acetate, polyvinyl alcohol and poly vinyl butyral which are used in different industries. The process of employing palladium-gold catalysts to obtain vinyl acetate from ethylene, acetic acid, and oxygen has been known for decades. There are various methods for depositing the palladium and gold on the carrier surface. One method is the carrier is impregnated with an aqueous solution of mixed salts of palladium and gold, and the solution is then evaporated to dryness, and sintered in air. It is then treated with reducing agents. In this study the impregnation and shell impregnation method is used for syntheses of VAM catalyst and their structural characteristics are compared. The Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX) and X-ray powder diffraction (XRD) are a commonly used characterization technique for qualitative and qualitative analysis of elements present in the studied samples.