A kinetic model of multi-step furfural hydrogenation over a Pd-TiO2 supported activated carbon catalyst
نویسندگان
چکیده
The multi-step, aqueous phase hydrogenation kinetics of furfural (FUR) to furfuryl alcohol (FA), 2-methylfuran (2MF), tetrahydrofurfuryl (THFA) and 5-hydroxy-2-pentanone (5H2P) over Pd-TiO2 on an activated carbon catalyst (derived from a monolith structure) was studied (180 °C, 2.1 MPa). Titanium addition created metal–acid functional promoted 5H2P synthesis furfural. A Langmuir-Hinshelwood model with two active sites (a metal site for steps acid ring opening step) applied fit the kinetic data parameters reaction system were obtained using non-linear regression experimental data. showed acceptable agreement R2 0.93–0.96 concentration residuals (experimental-model) typically ? 5%. Adsorption constants 2MF THFA significantly lower than adsorption other three compounds. rate constant 1.6–1.8 mol/gcat.h consumption predicted by model. Reaction rates 0.2–0.35 mol/gcat.h, 0.1–0.13 0.8–1.0 formation 2-methylfuran, 5-hydroxy-2-pentanone, respectively. External internal mass transfer criterion indicate intrinsic estimated can be used perform monolithic reactor design
منابع مشابه
Deoxygenation of Beef Fat over Pd Supported Mesoporous TiO2 Catalyst Prepared by Single-Step Sol-Gel Process with Surfactant Template
متن کامل
Hydrogenation of succinic acid to 1,4-butanediol over rhenium catalyst supported on copper-containing mesoporous carbon.
Copper-containing mesoporous carbon (Cu-MC) was prepared by a single-step surfactant-templating method. For comparison, copper-impregnated mesoporous carbon (Cu/MC) was also prepared by a surfactant-templating method and a subsequent impregnation method. Rhenium catalysts supported on copper-containing mesoporous carbon and copper-impregnated mesoporous carbon (Re/Cu-MC and Re/Cu/MC, respective...
متن کاملHydrothermal liquefaction of microalgae over transition metal supported TiO2 catalyst
Hydrothermal liquefaction (HTL) of microalgae Nannochloropsis (NAS) over various transition metal M/TiO2 (M = Fe, Co, Ni, Mo, and Mn) was investigated. Ni/TiO2 was the most effective catalyst to improve the yield and quality of biocrude and the liquefaction conversion. Ni/TiO2 was characterized by XRD, XRF, and XPS. The research of Effect of reaction temperature on HTL of NAS over Ni/TiO2 sugge...
متن کاملInactivated properties of activated carbon-supported TiO2 nanoparticles for bacteria and kinetic study.
The activated carbon-supported TiO2 nanoparticles (TiO2/AC) were prepared by a properly controlled sol-gel method. The effects of activated carbons (AC) support on inactivated properties of TiO2 nanoparticles were evaluated by photocatalytic inactivation experiments of Escherichia coli. The key factors affecting the inactivation efficiency were investigated, including electric power of lamp, te...
متن کاملPartial acetylene hydrogenation over commercial Pd-Ag/α-Al2O3 catalyst promoted by ionic liquid
1-butyl-3-methyl imidazolinium hydroxide ionic liquid (BMIm[OH]) is loaded on commercial low surface area Pd-Ag/α-Al2O3 solid catalyst to enhance higher selectivity of acetylene partial hydrogenation. Different experimental techniques such as atomic absorption spectroscopy, surface area measurement and gas chromatography have been utilized to characterize chemical, structural and catalytic pro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemical Engineering Journal
سال: 2021
ISSN: ['1873-3212', '1385-8947']
DOI: https://doi.org/10.1016/j.cej.2021.128693