IM-5: A Highly Thermal and Hydrothermal Shape-Selective Cracking Zeolite
作者： Avelino Corma , Joaquı́n Martı́nez-Triguero , Susana Valencia , Eric Benazzi , Sylvie Lacombe
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摘要: Abstract Zeolite IM-5 shows a higher thermal and hydrothermal stability than that of ZSM-5, the rate dealumination being slower, as shown by 29 Si 27 Al magic-angle spinning nuclear magnetic resonance. This is responsible for larger acidity after calcination steaming. When cracking paraffin, cycloparaffin, olefin model compounds, this zeolite gives activity ZSM-5 with similar shape selectivity. used fluid catalytic additive, improved its increasing olefin-to-paraffin ratios in products, having special impact on production propylene.
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