铜纳米颗粒基催化剂在工业上得到了广泛的应用,但纳米颗粒在化学气氛中往往会烧结成较大的催化剂,这对催化剂性能不利。 近日,浙江大学肖丰收、王亮、华东理工大学曹宵鸣、北京理工大学马嘉璧共同通讯在Science 在线发表题为“Dealuminated Beta zeolite reverses Ostwald ripening for durable copper nanoparticle catalysts”...
In this study, amorphous CeOx islands loaded on dealuminated Beta zeolite were prepared via simple wetness impregnation. Then, partially embedded Pt nanoparticles in CeOx islands were obtained after reduction owing to the affinity of CeOx for Pt. In the propane dehydrogenation reaction, Pt/Ce5–...
A process for the catalytic conversion of hydrocarbons, in particular for the oligomerization of olefins wherein the catalyst comprises a zeolite which is at least partially in its acid form. The zeolite is a NU-86 zeolite comprising silicon and at least one element T selected from the group ...
Reduction of platinum dispersed on dealuminated beta zeolite. Journal of Molecular Catalysis A: Chemical 136: 293-299.Reduction of platinum dispersed on dealuminated beta zeolite. Ho L W,Hwang C P,Lee J F,et al. Journal ofMolecular Catalysis A:Chemical . 1998...
NiW-supported catalyst using the dealuminated Beta zeolite with SiO2/Al2O3 mole ratio of 55 showed the highest performance for the selective ring opening. The acidity of catalyst seemed to play an important role as active sites for the selective ring opening of 1-methylnaphthalene but ...
The study investigates the activity, selectivity, and stability of dealuminized H-Beta zeolite samples in the oligomerization of pent-1-ene. It was demonstrated that the yield of pentene oligomers primarily depends on the concentration of acid sites in the catalyst. At 110掳C, the highest ...
Otomo, R.; Yokoi, T.; Kondo, J.N.; Tatsumi, T.; Dealuminated beta zeolite as effective bifunctional catalyst for direct transformation of glucose to 5-hydroxymethylfurfural. Appl. Catal. A: Gen 2014, 470, 318-326.Otomo, R., Yokoi, T., Kondo, J. N., and Tatsumi, T. (2014). ...
Yttrium-modified dealuminated Betazeolite (Y-BEA) represents a type of Lewis acid zeolite that has gained attention for its potential to efficiently catalyze the conversion of biomass-derived oxygenates. The structure of the Y active sites and their dynamics during biomass conversion reactions, which...
In this work, in order to obtain a high yield of 5-HMF, a series of Sn-Al-Beta catalysts containing both Lewis and Bronsted acid sites were prepared by a convenient solid state ion exchange (SSIE) method using partially dealuminated Beta zeolite and tin(II) acetate.RESULTS: The obtained...
NiW-supported catalyst using the dealuminated Beta zeolite with SiO2/Al203 mole ratio of 55 showed the highest performance for the selective ring opening. The acidity of catalyst seemed to play an important role as active sites for the selective ring opening of 1-methylnaphthalene but there ...