The Generalized Broekhoff-De Boer Method

Synthesis of HMOR and HZSM-5 and their Behaviour in the Catalytic Conversion of Methanol to Propylene (MTP)

“…The mordenite structure consists of two channel systems: an elliptical pore channel (12MR 6.7×7.0 Å), which runs parallel to the c-axis, and another channel that runs parallel to the b-axis (8MR 2.6×5.7 Å). Due to its high thermal and acid stability, mordenite has been used as a catalyst for important reactions, such as hydrocracking, hydroisomerization, alkylation, reforming, dewaxing and the production of dimethylamines [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Mordenite has also been used in the adsorptive separation of gas or liquid mixtures [25][26][27][28][29][30].…”

“…The relative acidity of the reactant molecule as well as the quantitative distribution of the type of different acid sites will determine the catalytic activity. There are many reports on the relationship between the acidity of zeolites and their catalytic activity [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][35][36][37][38][39][40]. Various methods such as titration, gravimetric adsorption, temperature programmed desorption of bases, calorimetric measurement and the infrared spectroscopy of adsorbed species have been used to measure the acidity of zeolites [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”