Catalytic conversion of a biofuel to hydrocarbons: effect of mixtures of HZSM-5 and silica-alumina catalysts on product distribution

Adjaye, John; Katikaneni, Sai P.; Bakhshi, Narendra N.

doi:10.1016/s0378-3820(96)01031-4

Cited by 171 publications

(123 citation statements)

References 12 publications

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“…[60][61][62][63] The zeolite catalysts gave rise to higher yields of hydrocarbon than the silicaalumina and silicalite catalysts. ZSM-5 produced the highest amount (34 wt % of feed) of liquid organic products.…”

Section: Methodsmentioning

confidence: 97%

Synergies between Bio‐ and Oil Refineries for the Production of Fuels from Biomass

2007

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As petroleum prices continue to increase, it is likely that biofuels will play an ever‐increasing role in our energy future. The processing of biomass‐derived feedstocks (including cellulosic, starch‐ and sugar‐derived biomass, and vegetable fats) by catalytic cracking and hydrotreating is a promising alternative for the future to produce biofuels, and the existing infrastructure of petroleum refineries is well‐suited for the production of biofuels, allowing us to rapidly transition to a more sustainable economy without large capital investments for new reaction equipment. This Review discusses the chemistry, catalysts, and challenges involved in the production of biofuels.

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Section: Methodsmentioning

confidence: 97%

Synergies between Bio‐ and Oil Refineries for the Production of Fuels from Biomass

2007

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“…Comparing to the NiMo/USY catalyst, the selectivity for jet-range aromatics over the NiMo/8AHFS-Y catalyst decreased about only by half (29.8% to 13.5%) although the amount of Brønsted and Lewis acid for the NiMo/USY catalyst was about 10 times as high as that for the NiMo/8AHFS-Y catalyst. Moreover the trimethylbenzene and methyl ethylbenzene in the aromatics increased because the proportion increase of stronger acid sites favoured the dealkylation of the higher aromatics with the increase of the AHFS concentration [37]. The selectivity of jet range aromatic hydrocarbons over NiMo/1NH-Y increased because of the density increase of strong Brønsted and Lewis sites.…”

Section: Stability Of Catalystsmentioning

confidence: 99%

Hydroconversion of Waste Cooking Oil into Green Biofuel over Hierarchical USY-Supported NiMo Catalyst: A Comparative Study of Desilication and Dealumination

et al. 2017

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Abstract:The hydroconversion of waste cooking oil into hydrocarbon fuel was investigated over the hierarchical USY zeolite-supported NiMo catalysts which were prepared by dealumination ((NH 4 ) 2 SiF 6 )/desilication (NaOH). The physical and acidity properties of the hierarchical catalysts were characterized by X-ray diffraction (XRD), the Brunauer-Emmett-Teller (BET) infrared spectroscopy of adsorbed pyridine (Py-IR), ammonia temperature-programmed desorption (NH 3 -TPD), and H 2 temperature-programmed reduction (H 2 -TPR). The Brønsted/Lewis (B/L) acid distribution was little affected by dealumination and the acid density decreased significantly. However, the highly-desilicated catalysts decreased the B/L ratio obviously. Therefore, many more Mo species in the NiMoO 4 − and MoO 3 phases were produced in the AHFS-treated catalysts, while more high-valence-state Mo species in the NiMoO 4 − phase were formed in the NaOH-treated catalysts.The AHFS-treated catalysts showed higher catalytic activity and better DCO 2 selectivity and selective cracking for jet fuel. The 42.3% selectivity of jet fuel and 13.5% selectivity of jet-range aromatics was achieved over the 8 wt % (NH 4 ) 2 SiF 6 -treated catalyst with 67% DCO 2 selectivity.

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“…Pyrolysis bio-oils are complex mixtures, typically containing several hundred compounds [7], and understanding of their catalytic conversion is therefore challenging. The data characterizing the conversion of these complex bio-oils [8][9][10][11][12][13] lack the detail to allow resolution of the reactions occurring during the catalytic upgrading-the products are not well documented, and the fundamental reaction networks are not well understood. We propose that data characterizing the conversion of individual compounds representative of bio-oils may be of value in the emergence of technology for biomass conversion, much as data characterizing the reactions of individual compounds in petroleum have been helpful in the improvement of processes for petroleum refining [14].…”

Section: Introductionmentioning

confidence: 99%

Conversion of 4-Methylanisole Catalyzed by Pt/γ-Al2O3 and by Pt/SiO2-Al2O3: Reaction Networks and Evidence of Oxygen Removal

et al. 2011

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The conversion of 4-methylanisole, a prototypical bio-oil compound, was catalyzed by Pt/Al 2 O 3 , Pt/SiO 2 -Al 2 O 3 , or HY zeolite at 573 K and atmospheric pressure. More than a dozen products were formed with each catalyst, the most abundant being 4-methylphenol, 2,4-dimethylphenol, and 2,4,6-trimethylphenol; toluene was also a major product when the catalyst was supported platinum with H 2 as a co-reactant. 4-Methylphenol was the only methylphenol isomer formed in significant yields, which indicates that migration of the methyl group on the aromatic ring is not significant under the selected reaction conditions. The data determine approximate reaction networks including reactions forming 4-methylphenol, 2,4-dimethylphenol, and toluene as primary products. The kinetically significant reaction classes were transalkylation, observed with all three catalysts, and hydrogenolysis (including hydrodeoxygenation) and hydrogenation, observed only with the platinumcontaining catalysts operating in the presence of H 2 . Data such as those reported here provide a starting point for predicting the conversion of whole bio-oils for removal of oxygen and upgrading of fuel properties.

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Catalytic conversion of a biofuel to hydrocarbons: effect of mixtures of HZSM-5 and silica-alumina catalysts on product distribution

Cited by 171 publications

References 12 publications

Synergies between Bio‐ and Oil Refineries for the Production of Fuels from Biomass

Synergies between Bio‐ and Oil Refineries for the Production of Fuels from Biomass

Hydroconversion of Waste Cooking Oil into Green Biofuel over Hierarchical USY-Supported NiMo Catalyst: A Comparative Study of Desilication and Dealumination

Conversion of 4-Methylanisole Catalyzed by Pt/γ-Al2O3 and by Pt/SiO2-Al2O3: Reaction Networks and Evidence of Oxygen Removal

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