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首页> 外文期刊>International Journal of Materials Engineering Innovation >Synthesis of hierarchical nano-crystalline zeolite beta using biomass-derived hard templates
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Synthesis of hierarchical nano-crystalline zeolite beta using biomass-derived hard templates

机译：使用生物质衍生的硬模板合成分级纳米晶沸石β

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摘要

Mesoporous nano-crystalline zeolite beta was prepared via hydrothermal synthesis and the effect of carbohydrates as a hard template was studied. The monosaccharide, disaccharide, polysaccharide and cyclic oligosaccharide type of carbohydrates were used as a secondary template. These modified beta zeolites were characterised by XRD, SEM and N_2 physisorption. The polysaccharide and oligosaccharide types of carbohydrates show a significant mesoporosity generation in nano-crystalline zeolite beta where as monosaccharide and disaccharide types of carbohydrates alter the pH of gel and lead to the amorphous phase. The XRD and SEM results confirmed the formation of nano-crystalline zeolite beta. N_2 adsorption/desorption results showed the generation of the mesoporosity in nano-crystalline zeolite beta. Advantages of using the biomass-derived hard-templates have been brought out.
机译：通过水热合成法制备了介孔纳米晶β沸石，研究了碳水化合物作为硬模板的作用。碳水化合物的单糖，二糖，多糖和环状寡糖类型用作辅助模板。这些改性的β沸石通过XRD，SEM和N_2物理吸附来表征。碳水化合物的多糖和低聚糖类型在纳米晶沸石β中显示出显着的介孔性，其中碳水化合物的单糖和二糖类型会改变凝胶的pH值并导致非晶相。 XRD和SEM结果证实形成了纳米晶体β沸石。 N_2吸附/解吸结果表明在纳米晶β沸石中产生了介孔性。已经展现出使用源自生物质的硬模板的优点。

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