Effects of hydrogen pretreatment on the
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Chau-Shang Chang; Min-Dar Lee
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Article
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1995
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Elsevier Science
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English
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The interactions between gallium and H-ZSM-5 on gallium-supported H-ZSM-5 catalysts were investigated. Gallium was introduced into H-ZSM-5 by impregnation [Ga/Z5(im)] and physical mixing [Ga/Z5(mix)]. Temperature-programmed desorption studies of ammonia show that the number of strong acid sites (HTP