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自从Parry提出用吡啶吸附红外光谱研究固体表面酸性质后,已被广泛应用于沸石表面酸性研究.关于沸石表面L酸的产生以及能否可逆地转换为B酸仍有不同的看法.β沸石有与八面沸石相似的孔径尺寸和吸附能力,比八面沸石有更高的硅铝比。由于它优异的催化性能而受到重视.我们用吡啶吸附红外光谱研究Hβ沸石表面酸性时,发现了一些新的现象,这不仅使我们了解Hβ沸石表面酸性的特点,也将有助于深化对沸石表面L酸的认识.
Since Parry proposed the use of pyridine adsorption infrared spectroscopy to study the surface acid properties of solids, it has been widely used in the study of zeolite surface acidity. There are still different opinions on the production of L acid on the zeolite surface and the reversible conversion to B acid. Similar to faujasite’s pore size and sorption capacity, it has a higher Si / Al ratio than faujasite. Because of its excellent catalytic performance and attention.We used pyridine adsorption infrared spectroscopy Hβ zeolite surface acidity and found some new phenomena, which not only allows us to understand the characteristics of Hβ zeolite surface acidity, will also help to deepen the zeolite Surface L acid understanding.