Mo/ZSM-5Na+ post-impregnationCokingMono-functionalHydrocarbon pool mechanismMethane dehydroaromatization is a potential technique in converting natural gas into value-added aromatics and clean hydrogen. However, severe coking hinders industrial application of conventionally prepared Mo/ZSM-5 catalyst for ...
Mechanism of coking and regeneration of catalysts containing ZSM-5 zeoliteThe ZSM-5 zeolites and ZSM-5-zeolite containing catalysts coked and annealed from the catalyst coke to a various extent were investigated with IRS and HREM methods. The mechanisms of carbonising and of coke deposition and ...
A comprehensive study on the acidic and coking properties of selectivated H-ZSM-5 catalysts during xylene isomerization has been made. The effects of surface modification by pre-coking and silylation on the nature and location of carbonaceous deposits and on related acidic features of the spent cat...
ZSM一5【1】,Mo2C-ZSM一5[2】,Zn--ZSM一5【3—5】,Cu—ZSM一5 f61,wasreportedtobeakindofpromisingcatalystforMTA reaction.Forexample,.Yoshihiroeta1.[1】reportedthatAg modified Z S M .5 c at al'y st c an a fford a n ar om at: ic y ield hig her tha n 80 %.bu t th e pr...
Xylenes transformation over zeolites ZSM-5 ruled by acidic properties IR spectroscopy2D COS analysisAcidityXyleneIsomerisationDisproportionationA system of interfaced AFM and Raman microscopes was used to study heterogeneity of ... K Go??Bek,KA Tarach,K Góra-Marek - 《Spectrochimica Acta Part A Mole...
ZSM-5Effective deoxygenation of oxygenates remains to be a major challenge that needs to be overcome before converting biomass to fuels in an industrial scale. Present technology uses expensive gaseous hydrogen (H) for deoxygenation. This work looks at the possibility of using methane or natural ...
However, severe coking hinders industrial application of conventionally prepared Mo/ZSM-5 catalyst for methane dehydroaromatization. Usually, Bronsted acid sites (BAS) were considered the key for coking. To gain deeper insight into the coke, here we present a simple post-impregnation of Na+ to Mo...
In the presence of metals ZSM-5 was less deactivated by coke formation than the FCC catalyst resulting in an enhanced effectiveness of ZSM-5 in both, ... D Wallenstein,B Kanz,A Haas - 《Applied Catalysis A General》 被引量: 35发表: 2000年 Efficient micro carbon column rapid breakthrough...
Fresh ZSM-5 zeolite catalysts were pretreated at 460 ℃ and 500 ℃ with various cumulative amount of water feed(CAWF) in a fixed bed reactor. The catalytic process was carried out under the following conditions: a temperature of 480 ℃;a methanol WHSV of 3 h-1; a methanol partial ...
J Escobar,MC Barrera,SB Fouconnier - 《Canadian Journal of Chemical Engineering》 被引量: 0发表: 2023年 Oxidation of benzene to phenol with N_(2)O over a hierarchical Fe/ZSM-5 catalyst Catalytic oxidation of benzene with N_(2)O to phenol over the hierarchical and microporous Fe/ZSM-5-...