Evidence for the presence of superacid nonframework hydroxyl groups in dealuminated HY zeolites

G. Garralón; Avelino Avelino; V. Formés

doi:10.1016/0144-2449(89)90015-8

Evidence for the presence of superacid nonframework hydroxyl groups in dealuminated HY zeolites

Zeolites 9(1): 84-86

Article 1989 English

Abstract

1 min read

The presence of a hydroxyl i.r. band at 3610 cm−1 that interacts with pyridine at desorption temperatures up to 400°C is detected in dealuminated HY zeolite and tentatively assigned to an amorphous silica—alumina phase, formed upon dealumination.

Discussion(0)

No comments yet. Be the first to comment.

Related publications

Chapter in a book1988

Tetrahedral and Octahedral Extraframework Aluminum in Ultrastable Y Zeolites

Avelino Avelino, V. Fornés, Agustı́n Martı́nez, J. Sanz

Chapter in a book1988

Influence of the Method of Dealumination of Y Zeolites on its Behaviour for Cracking N-Heptane and Vacuum Gas-Oil.

Avelino Avelino, V. Fornés, Agustı́n Martı́nez, Francisco Montenegro de Melo, O. Pallota

Chapter in a book1988

Zeolite Beta: Structure, Activity, and Selectivity for Catalytic Cracking

Avelino Avelino, V. Fornés, Francisco Vicente Sales Melo, Joaquín Pérez‐Pariente

Article1995

Infrared spectroscopy, thermoprogrammed desorption, and nuclear magnetic resonance study of the acidity, structure, and stability of zeolite MCM-22

Avelino Avelino, C. Corell, V. Fornés, Wacław Kołodziejski, Joaquín Pérez‐Pariente

Zeolites

Article1991

Evidence for the presence of a bimolecular pathway in the isomerization of xylene on some large-pore zeolites

Avelino Avelino, Enrique Sastre

Journal of Catalysis