The fabrication of monolithic ZSM-5 catalysts via extrusion is pivotal for industrial catalytic processes;nevertheless,the addition of adhesives might affect their catalytic performance.Herein,the rice husk-derived bi...The fabrication of monolithic ZSM-5 catalysts via extrusion is pivotal for industrial catalytic processes;nevertheless,the addition of adhesives might affect their catalytic performance.Herein,the rice husk-derived bio-SiO_(2),serving as a silicon source and natural adhesive,was introduced in the synthesis and extrusion of ZSM-5 catalysts denoted as BioZSM-5,thereby enhancing their industrial viability and catalytic performance.The f-n-BioZSM-5(obtained by extrusion of n-BioZSM-5)showcased enhanced butene and pentene selectivity,exhibiting robust stability,achieving an impressive 84.8%olefin selectivity(over 10 cycles).The biomass template significantly improved porosity,acidity,and anti-coking properties.Moreover,the f-n-BioZSM-5 exhibited a compressive strength 4.3 times superior to that of f-n-ZSM-5 without using bio-template,achieving better abrasion resistance and enhanced mechanical properties even using 1/3 of the adhesive dosage.These results will provide valuable guidance for developing shaped zeolite catalysts for industrial catalytic pyrolysis applications,especially for the production of olefin from fatty acids.展开更多
基金financially supported by the National Natural Science Foundation of China(U21A20324,22278167,22350410389 and 22322806)the Fujian Provincial Natural Science Foundation of China(2024J01100)。
文摘The fabrication of monolithic ZSM-5 catalysts via extrusion is pivotal for industrial catalytic processes;nevertheless,the addition of adhesives might affect their catalytic performance.Herein,the rice husk-derived bio-SiO_(2),serving as a silicon source and natural adhesive,was introduced in the synthesis and extrusion of ZSM-5 catalysts denoted as BioZSM-5,thereby enhancing their industrial viability and catalytic performance.The f-n-BioZSM-5(obtained by extrusion of n-BioZSM-5)showcased enhanced butene and pentene selectivity,exhibiting robust stability,achieving an impressive 84.8%olefin selectivity(over 10 cycles).The biomass template significantly improved porosity,acidity,and anti-coking properties.Moreover,the f-n-BioZSM-5 exhibited a compressive strength 4.3 times superior to that of f-n-ZSM-5 without using bio-template,achieving better abrasion resistance and enhanced mechanical properties even using 1/3 of the adhesive dosage.These results will provide valuable guidance for developing shaped zeolite catalysts for industrial catalytic pyrolysis applications,especially for the production of olefin from fatty acids.
