SnxOy/SAPO-34 as catalysts for catalytic dehydration of bio-ethanol: impacts of oxidation state, interaction, and loading amount

Enhanced performance of glycerol to aromatics over Sn-containing HZSM-5 zeolites

“…However, compared with the fresh Sn/HZSM-5, more Sn-OH groups are detected on the surface of spent Sn/HZSM-5 catalyst due to the hygroscopicity of tin oxides. This phenomenon is similar to the previous report 39 in which Uruya Chinniyomphanich et al studied the impacts of oxidation state of Sn x O y /SAPO-34 catalysts before and aer catalytic dehydration of bio-ethanol. In addition, carbon deposits located on the Sn/ HZSM-5 would lead to the attenuation of Sn signals.…”

Diethyl Ether Production during Catalytic Dehydration of Ethanol over Ru- and Pt- modified H-beta Zeolite Catalysts

“…In order to compare the result with other researches, the DEE yields from ethanol dehydration with various catalysts are summarized in Table 5. Previous reports also indicated that the chemical promoter is necessary for improvement of the DEE yield due to increased catalytic activity 8,11,23 . Therefore, the modified HBZ is suitable to be applied for the ethanol dehydration to produce DEE.…”

Cleaner production of methanol from carbon dioxide over copper and iron supported MCM-41 catalysts using innovative integrated magnetic field-packed bed reactor

“…For 10(Fe)/MCM-41 catalyst, the pore sizes were almost similar to those of MCM-41 support, while the larger pore size of Cu containing catalysts both 10(Cu)/MCM-41 and 10(Fe)-10(Cu)/MCM-41 was decreased from 30.5 nm to 17.5 nm and 17.2 nm, respectively. The decrease of the larger pore size, specific surface area and specific pore volume might occur due to the loaded metals partially blocked and entered into mesopores of MCM-41 support during the impregnation process (Chinniyomphanich et al, 2016;Jiang et al, 2015). (Fig.…”

“…However, the main products of CO2 hydrogenation are carbon monoxide (CO) and methane (CH4), while low alcohols and dimethyl ether are produced (Ren et al, 2015;Riaz et al, 2013). In order to improve alcohol selectivity, many researchers have focused on the important factors, e.g., metal catalysts (Chinniyomphanich et al, 2016;Bonura et al, 2014), promoters (Angelo et al, 2015;Rafati et al, 2015), supports (Ren et al, 2015;Kiatphuengporn et al, 2014), catalyst preparation techniques (Romero-Sáez et al, 2016), and operating conditions (Riaz et al, 2013).…”