Directly synthesized V-containing BEA zeolite: Acid-oxidation bifunctional catalyst enhancing C-alkylation selectivity in liquid-phase methylation of phenol

Straightforward synthesis of beta zeolite encapsulated Pt nanoparticles for the transformation of 5-hydroxymethyl furfural into 2,5-furandicarboxylic acid

“…2(D), thereby revealing the pore information. Notably, the BEA zeolite possessed the type I + IV sorption isotherms with a sharp uptake at low pressure [33][34][35], which was consistent with the typical microporous structure and was further demonstrated by the narrow pore size distribution focusing at 0.65 nm. The weak uptake in the moderate relative pressure originates from the mesopore formation owing to the loose packing of the primary particles, as shown in the SEM images.…”

“…The XRD patterns of beta, 0.2%Pt@Beta, and 0.5%@Beta exhibited typical diffraction peaks for the BEA phase, thereby reflecting the highly crystallized zeolite framework [27,33]. No peaks were observed for the possible existence of other impurities or aggregated Pt species [37].…”

“…A moderate MPTS/Pt molar ratio of 14 promoted the encapsulation of Pt species (entry 11, Table S1) and endowed a strong XRD pattern (curve d, Fig. S4), indexing high crystallinity [31][32][33][34][35]. In contrast, excessive MPTS with an MPTS/Pt molar ratio of 28 resulted in a consistently high Pt content of 0.2 wt% (entry 3, Table S1) but with weakened XRD diffraction peaks (curve e, Fig.…”

Single-Atom-Based Vanadium Oxide Catalysts Supported on Metal–Organic Frameworks: Selective Alcohol Oxidation and Structure–Activity Relationship

“…Owing to their high catalytic performance in various redox-mediated reactions and availability, − vanadium oxide catalysts have found extensive applications in chemical and environmental industries, including the mass production of sulfuric acid and phthalic anhydride and the remediation of environmental pollution. ,− Most vanadium catalysts used industrially are deposited on the surface of a porous solid support, such as silica, alumina, titania, zirconia, and zeolites, primarily to increase the surface area and stability, essential to creating a superior catalyst . These catalyst supports were initially assumed to be inert in terms of reactivity .…”

CuI/AgI‐containing coordination compounds as advanced catalysts for selective oxidation of styrene to benzaldehyde

“…[10] Therefore, the way to effectively catalyze the oxidation of styrene to benzaldehyde attracted the attention of many scientists. [11][12][13][14][15] To explore green and more effective catalysts, there are many kinds of complexes, such as zeolites, [16][17][18][19] MOFs, [20][21][22] carbon-based materials, [11,14,[23][24][25] and so on, [12,[26][27][28][29] which were used in the oxidation reaction of styrene as catalysts. However, the synthesis of efficient catalysts, high cost and poor cycle capacity limit the large-scale application of selective oxidation of styrene to benzaldehyde in the industry.…”