Quantitative conversion of triglycerides to hydrocarbons over hierarchical ZSM-5 catalyst

Chen, Hao; Wang, Qingfa; Zhang, Xiangwen; Wang, Li

doi:10.1016/j.apcatb.2014.11.041

Cited by 113 publications

(54 citation statements)

References 62 publications

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“…Decarboxylation/decarbonylation was proceed well because carboxylic acids of 2.33 area% were found [6]. As reported by Savitri et al, hydrocracking on Calophyllum inophyllum oil with NiMo/H-Zeolite catalyst, at temperature of 350 o C and pressure of 60 bar for 2 h produced n-paraffin of 90.89 area% in the range of C 10 -C 19 . Carboxylic acids of 5.21 area% were found.…”

Section: Introductionsupporting

confidence: 53%

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Co-Ni/HZSM-5 Catalyst for Hydrocracking of Sunan Candlenut Oil (Reutealis trisperma (Blanco) Airy Shaw) for Production of Biofuel

Muttaqii

Marlinda

Roesyadi

et al. 2017

J. Pure App. Chem. Res.

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The production of biofuel by hydrocracking of Sunan candlenut oil as renewable energy can substitute fossil energy. The purpose of this work is to produce biofuel by hydrocracking of Sunan candlenut oil with Co-Ni/HZSM-5 catalyst. The catalyst was prepared by incipient wetness impregnation method. The characterization of catalyst was determined by X-Ray Diffraction (XRD) and nitrogen adsorption-desorption isotherms. The functional groups of the hydrocarbon was determined by Fourier Transform Infrared (FT-IR). The hydrocarbon composition was determined by Gas Chromatography Mass Spectrometry (GC-MS). The results showed that biofuel composition consist of 0.14 area% isoparaffins, 12.29 area% cycloparaffins, 6.87 area% normal paraffins, 4.18 area% olefin, and 10.52 area% aromatics, and oxygenated compounds including 35.03 area% carboxylic acids. It was necessary to be done that the oxygenated compounds in biofuel were eliminated to produce the abundant paraffin hydrocarbons at reaction temperature above 350 o C.

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Section: Introductionsupporting

confidence: 53%

“…It is implied that the transportation of hydrocarbon molecules from and to the active site is determined by the pore diameter of catalyst [2]. However, the hierarchical HZSM-5 catalyst was very favorable for the mass transport of triglyceride molecules [19]. After deoxygenation finished, isomerization occurred completely, as reported by Wang et al [20].…”

supporting

confidence: 50%

Co-Ni/HZSM-5 Catalyst for Hydrocracking of Sunan Candlenut Oil (Reutealis trisperma (Blanco) Airy Shaw) for Production of Biofuel

Muttaqii

Marlinda

Roesyadi

et al. 2017

J. Pure App. Chem. Res.

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“…This result indicated that the aromatization reaction of the cracking products was inhibited after AHFS treatment because of the decrease of the Brønsted and Lewis acidity. Recently, we found that the B/L ratio also played an important role in aromatization of olefins [36]. After AHFS treatment, the similar B/L ratio was obtained but the amount of these acid sites decreased significantly.…”

Section: Stability Of Catalystsmentioning

confidence: 79%

“…In our previous research, we found that the Mo 5+ and Mo 6+ species mainly contributed to the DCOx reactions, especially the DCO 2 reaction, and Mo 4+ favoured the HDO reaction. As shown in Figure 3, there were more Mo species in NiMoO 4− and MoO 3 phase produced in the high AHFS-treated catalysts, which were generally accepted to be the active sites for DCO 2 reaction [36]. Therefore, the high selectivity of the DCO 2 reaction was achieved over the NiMo/8AHFS-Y and NiMo/12AHFS-Y catalysts.…”

Section: Hydrotreating Of Waste Cooking Oilmentioning

confidence: 81%

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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“…The usual catalysts of choice are high acidity zeolites, such as mordenite and near-faujasite zeolites, especially HY [5][6][7]. Mesitylene-benzene reactions on these two zeolites have recently showed aspects of the detailed mechanism prevailing in transalkylation reactions, including disportionation [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Alkyl Group/s and Type of Aromatic Conjugation on Transalkylation Reactions of Alkyl Aromatics

Mokoena¹,

Scurrell²

2018

Asian J. Chem.

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Alkyl group removal (not necessarily transalkylation) from the aromatic ring favoured sterically strained molecules and if there is less strain then removal from the ring with the most alkyl groups is favoured over considerations of the alkyl group size. The amount and type of aromatic ring conjugation also plays an important role in the alkyl-transfer reactions of alkylaromatics. The position of the alkyl group on the aromatic moiety also affects alkyl-transfer due to both electronic effects and more importantly the steric factors. Contrary to the ease of dealkylation or alkyl group removal favouring conjugation, alkylation or alkyl group acceptance favoured smaller aromatics or reduced conjugation. With the above observations in mind and the fact that the ease of alkyl group removal increased with aromatic conjugation and considering the fact that benzene derivatives required stronger acid sites for activation. The calculations suggest that use of less acidic large pore zeolites like MCM-41 and MCM-48 might result in a selective one-way (no reverse reactions) alkyl-transfer from bulky molecules to smaller benzene derivatives.

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Quantitative conversion of triglycerides to hydrocarbons over hierarchical ZSM-5 catalyst

Cited by 113 publications

References 62 publications

Co-Ni/HZSM-5 Catalyst for Hydrocracking of Sunan Candlenut Oil (Reutealis trisperma (Blanco) Airy Shaw) for Production of Biofuel

Co-Ni/HZSM-5 Catalyst for Hydrocracking of Sunan Candlenut Oil (Reutealis trisperma (Blanco) Airy Shaw) for Production of Biofuel

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

Effect of Alkyl Group/s and Type of Aromatic Conjugation on Transalkylation Reactions of Alkyl Aromatics

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