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Preparation,Characterization and Catalytic Behavior of Heteropoly Acid Immobil ized on Ultra Stable Y ZeoliteII.Isopropylation of Naphthalene

Jun Wang

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Abstract

Alkylation of naphthalene with isopropanol was investigated on ultr a stable Y (USY) zeolite supported 12-tungstophosphoric acid (PW) catalysts in hig h-pressure batch reactor.Comparative studies were also carried out on mesop orou s silica molecular sieves (MCM-41 and SBA-15) supported PW catalysts at the same reaction conditions as those for PW/USY catalysts.It was found 10%PW/USY with the activation temperature of 573 K exhibited higher catalytic activity than oth er PW/USY catalysts because of its larger acid amount and appropriate medium str ong acidity.Suitable reaction temperature was 433 K,and the molar ratio of na p hthalene,isopropanol and cyclohexane was 1/2/20.Compared with 40%PW/MCM-41 an d 50%PW/SBA-15,10%PW/USY exhibited higher catalytic activity with high selectivi ty.

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Alkylation of naphthalene with isopropanol was investigated on ultr a stable Y (USY) zeolite supported 12-tungstophosphoric acid (PW) catalysts in hig h-pressure batch reactor.Comparative studies were also carried out on mesop orou s silica molecular sieves (MCM-41 and SBA-15) supported PW catalysts at the same reaction conditions as those for PW/USY catalysts.It was found 10%PW/USY with the activation temperature of 573 K exhibited higher catalytic activity than oth er PW/USY catalysts because of its larger acid amount and appropriate medium str ong acidity.Suitable reaction temperature was 433 K,and the molar ratio of na p hthalene,isopropanol and cyclohexane was 1/2/20.Compared with 40%PW/MCM-41 an d 50%PW/SBA-15,10%PW/USY exhibited higher catalytic activity with high selectivi ty.

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Available abstract

Alkylation of naphthalene with isopropanol was investigated on ultr a stable Y (USY) zeolite supported 12-tungstophosphoric acid (PW) catalysts in hig h-pressure batch reactor.Comparative studies were also carried out on mesop orou s silica molecular sieves (MCM-41 and SBA-15) supported PW catalysts at the same reaction conditions as those for PW/USY catalysts.It was found 10%PW/USY with the activation temperature of 573 K exhibited higher catalytic activity than oth er PW/USY catalysts because of its larger acid amount and appropriate medium str ong acidity.Suitable reaction temperature was 433 K,and the molar ratio of na p hthalene,isopropanol and cyclohexane was 1/2/20.Compared with 40%PW/MCM-41 an d 50%PW/SBA-15,10%PW/USY exhibited higher catalytic activity with high selectivi ty.

Key concepts: Catalysis, Chemistry, Naphthalene, Cyclohexane, Molecular sieve, Alkylation, Zeolite, Molar ratio

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Preparation,Characterization and Catalytic Behavior of Heteropoly Acid Immobil ized on Ultra Stable Y ZeoliteII.Isopropylation of Naphthalene — Research Paper | ScholarLens