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Selective Conversion of 2-Methylfuran to 1,4-Pentanediol Catalyzed by Bimetallic Ni-Sn Alloy
No full textThe selective conversion of 2-methylfuran (2-MeF) to 1,4-pentanediol (1,4-PeD) over bimetallic nickel-tin alloy catalysts in the ethanol/H2O solvent mixture was studied. By using bulk Ni-Sn(x); x = 3.0 and 1.5 catalysts, a maximum yield of 1,4-PeD (49%) was obtained at 94% conversion of 2-MeF. The dispersion of Ni-Sn(x) on the aluminium hydroxide (AlOH) or -Al2O3supports allowed to an outstanding yield of 1,4-PeD (up to 64%) at 433 K, 3.0 MPa of H2within 12 h. Ni-Sn(3.0)/AlOH catalyst was found to be reusable and the treatment of the recovered Ni-Sn(3.0)/AlOH catalyst with H2at 673 K for 1 h restored the catalyst’s original activity and selectivity.Copyright © 2019 BCREC Group. All rights reservedKeywords: Ni-Sn alloy catalysts; selective conversion; 2-methylfuran; 1,4-pentanediol; 2-methyltetrahydrofuranHow to Cite: Rodiansono, R., Astuti, M.D., Husain, S., Nugroho, A., Sutomo, S. (2019). Selective Con-version of 2-Methylfuran to 1,4-Pentanediol Catalyzed by Bimetallic Ni-Sn Alloy. Bulletin of Chemical Reaction Engineering & Catalysis, 14(3): 529-541 (doi:10.9767/bcrec.14.3.4347.529-541)Permalink/DOI: https://doi.org/10.9767/bcrec.14.3.4347.529-54
ACTIVITY TEST AND REGENERATION OF NiMo/Z CATALYST FOR HYDROCRACKING OF WASTE PLASTIC FRACTION TO GASOLINE FRACTION
Full text linkActivity test and regeneration of NiMo/active natural zeolite catalyst for hydrocracking of waste plastic fraction of polyprophylene (PP) type have been carried out. The catalysts was prepared by loading Mo followed by Ni Metals onto the natural zeolite (Z) sample, then calcined at 500oC, oxidized and reduced at 400oC under nitrogen, oxygen and hydrogen stream, respectively. The characterization of catalysts including spesific surface area, average pore radius, and total pore volume were performed by gas sorption analyzer, amount of total acid sites was determined by gas sorption method, and acid site strength was confirmed by IR spectroscopy. The hydrocracking process was carried out in a semi-flow reactor system at 360 oC and catalyst:feed ratio 0.5 under hydrogen stream (150 mL/hour). The feed was vaporized from the pyrolisis reactor into the hydrocracking reactor. A liquid product was collected and analyzed by gas chromatography (GC) and gas chromatography-mass spectroscopy (GC-MS). The characterization results showed that spesific surface area, average pore radius, and total pore volume of the Z sample decreased after loading of the Ni and Mo metals. Amount of total acid sites of the NiMo/Z catalyst was higher than that of the Z sample. The activity of NiMo/Z catalyst decreased after several continously runs. Its regeneration produced the NiMo/Z reg catalyst with similar activity and selectivity to the fresh catalyst (NiMo/Z). The activity of catalysts at the optimum condition followed the order of NiMo/Z reg>NiMo/Z>Z (conversion of hydrocarbon C>12) and NiMo/Z reg>NiMo/Z>Z (total yield of gasoline fraction). The selectivity of catalysts for C7-C8 product followed the order of Z>NiMo/Z>NiMo/Z reg.
Keywords: activity, polyprophylene, catalyst, gasoline fraction
Synthesis of Ni/Pd-M (M= Co, Ag, Fe) alloy catalysts for hydro-deoxygenation of bio-oil components
No full textBiomass feedstock valorisations are currently being explored for the production of bio-based platform chemicals,
fuels, and various commodity products by using bimetallic-based heterogeneous catalysts. The use of bimetallic
catalysts is a promising option for biomass feedstock upgrading, as the interaction between metals can modify the
surface properties of the catalyst meet with the complex surface. A simple hydrothermal treatment was applied to
produce Ni-Sn alloys both bulk and supported under mild conditions. This synthetic method offers easy process,
cost-effective, and eco-friendly procedure.
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Novel Preparation Method of Bimetallic Ni-In Alloy Catalysts Supported on Amorphous Alumina for the Highly Selective Hydrogenation of Furfural
No full textA novel preparation method for bimetallic nickel-indium alloy catalysts supported on amorphous alumina
(Ni-In(x)/AA; x = Ni/In molar ratio) catalysts has been developed and evaluated for the highly selective
hydrogenation of biomass-derived furfural. Ni-In(x)/AA catalysts were obtained via the hydrothermal
treatment of Raney® nickel supported on aluminium hydroxide (R-Ni/AlOH) and an InCl2·H2O solution
in an ethanol/H2O mixture at 423 K for 2 h, followed by reduction with H2 at 573–873 K for 1.5 h. The
formation of Ni-In alloy phases such as Ni3In2, Ni3In, Ni2In, and NiIn in Ni-In(2.0)/AA was clearly observed
after reduction with H2 at 873 K for 1.5 h. Ni-In(2.0)/AA contained a Ni2In alloy as the major phase, which
exhibited the best catalytic performance for the selective hydrogenation of furfural into furfuryl alcohol
and was stable for at least five consecutive reaction runs
Effective Production of Sorbitol and Mannitol from Sugars Catalyzed by Ni Nanoparticles Supported on Aluminium Hydroxide
No full textEffective production of hexitols (sorbitol and mannitol) was achieved from sugars by means of nickel nanoparticles supported on aluminium hydroxide (NiNPs/AlOH) catalyst. NiNPs/AlOH catalyst was prepared by a simple and benign environmentally procedure using less amount of sodium hydroxide. ICP-AES and XRD analyses confirmed that the NiNPs/AlOH catalysts comprised a large amount of remained aluminium hydroxide (i.e. bayerite and gibbsite). The presence of aluminium hydroxide caused a high dispersion Ni metal species. The average Ni crystallite sizes that derived from the Scherrer`s equation for former R-Ni and NiNPs/AlOH were 8.6 nm and 4.1 nm, respectively. The catalyst exhibited high activity and selectivity both hydrogenolysis of disaccharides (sucrose and cellobiose) and monosaccharides (glucose, fructose, and xylose) at 403 K for 24 h. The NiNPs/AlOH catalyst was found to be reusable for at least five consecutive runs without any significant loss of activity and selectivity. © 2013 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0
Investigation of fast hot compressed water pretreatment of oil palm fronds for fermentable sugar production
No full textTOTAL HYDROGENATION OF BIOMASS-DERIVED FURFURAL OVER RANEY NICKEL-CLAY NANOCOMPOSITE CATALYSTS
Full text linkInexpensive Raney Ni-clay composite (R-Ni/clay) catalysts exhibited excellent activity and reusability in the total hydrogenation of biomass-derived furfural into tetrahydrofurfuryl alcohol under mild conditions. For the Raney Ni-bentonite (R-Ni/BNT) catalysts, the complete reaction was achieved at 393 K, 180 min giving almost 99% yield of tetrahydrofurfuryl alcohol. The R-Ni/BNT catalyst was found to be reusable without any significant loss of activity and selectivity for at least six consecutive runs
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