FUEL PROCESSING TECHNOLOGY
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2019
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IF 4.507
Lele Jin,Wenzhi Li,Qiying Liu,Longlong Ma,Song Li,Yang Liu,Baikai Zhang,Qi Zhang
The liquid fuel (made of C 5 /C 6 alkanes) was obtained directly from the hydrogenolysis of microcrystalline cellulose (MCC) with Ir-VO x /SiO 2 combined with HZSM-5 as the composite catalyst in a biphasic system (n-dodecane + H 2 O). The performance of the catalyst was investigated by carrying out a series of experiments using various V/Ir molar ratios , catalyst dosages, reaction temperatures, reaction time, hydrogen pressure and substrates. At the optimized conditions, the cellulose was almost completely converted, and at the same time, a high C 5 /C 6 yield of 85.1% was obtained at 210 °C for 24 h and 6 MPa with the V/Ir molar ratio being 0.13. These results not only proved that Ir-VO x /SiO 2 (V/Ir = 0.13) has excellent performance for the hydrogenolysis of MCC to liquid alkanes, but also indicated that vanadium is a good metal promoter for iridium . In addition, it was proven the C5/C6 alkanes were obtained via sorbitol through the combined effect of Ir-VO x /SiO 2 and HZSM-5.
研究领域:
催化化学
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可再生资源转化
✓ 已验证
产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
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2019
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IF 6.669
Lele Jin,Wenzhi Li,Qiying Liu,Longlong Ma,Chao Hu,Ajibola T. Ogunbiyi,Mingwei Wu,Qi Zhang
In this study, the Mo-promoted Ir/SiO 2 (Ir-MoO x /SiO 2 ) catalysts combined with the zeolite HZSM-5 were used for the direct conversion of microcrystalline cellulose (MCC) to liquid fuel (C 5 /C 6 alkanes) in n-dodecane/H 2 O system. A synergistic effect was formed between the partially reduced MoO x species and the Ir particles, which effectively promoted the catalytic activity of Ir/SiO 2 catalyst. When the Mo/Ir molar ratio was 0.5, a high yield of C 5 /C 6 alkanes (91.7%) was achieved at 210 ℃ for 12 h. In addition, the main component of C 5 /C 6 alkanes was n-hexane, which was proven to be obtained by the hydrogenolysis of the key intermediate, sorbitol, formed from the hydrolysis and hydrogenation of MCC.
研究领域:
催化化学
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能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
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2021
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IF 9.642
Song Li,Lele Jin,Haiyong Wang,Xiangqian Wei,Wenzhi Li,Qiying Liu,Xinghua Zhang,Lungang Chen,Longlong Ma,Qi Zhang
Herein, WO x –decorated Ir/SiO 2 (W/Ir = 0.06) and HZSM-5 were coupled to selectively convert microcrystalline cellulose (MCC) into C 6 alkanes. A 92.8% yield of liquid alkanes including an 85.3% yield of C 6 alkanes was produced at 210 °C. Cellulose hydrolysis, glucose hydrogenation and sorbitol hydrodeoxygenation were integrated to produce alkanes via a sorbitol route. Ir-WO x /SiO 2 showed high performance for hydrogenation and hydrodeoxygenation reactions after hydrolysis catalyzed by HZSM-5. The intimate contact between WO x and Ir enhanced the synergistic interaction through the electron transfer from Ir to WO x . The interaction strengthened the reduction capability of Ir for hydrogenations, as well as improved the adsorption and activation of C-O bonds on reduced WO x for deoxygenations. The monotungstate WO x species provided moderate Lewis acids to cooperate with Ir to accelerate hydrodeoxygenations with alleviated retro -aldol condensation to yield more C 6 alkanes.
研究领域:
化学工程
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催化科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
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2015
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IF 3.52
Yujing Weng,Songbai Qiu,Chenguang Wang,Lungang Chen,Zhengqiu Yuan,Mingyue Ding,Qi Zhang,Longlong Ma,Tiejun Wang
In this work, a dual-bed aqueous catalysis system with Ru/C as catalyst was proposed for the liquid alkane (pentane/hexane: C5/C6) production from acid biomass hydrolysate. The low temperature (413 K) hydrogenation of biomass-derived carbohydrates into polyols was carried out in the first fixed-bed. The high temperature (523 K) hydrodeoxygenation (HDO) of polyols into alkanes was carried out in the down-stream bed. To screen the optimal reaction conditions, glucose and sorbitol were chosen for model tests. Whereby, reactor types, solution pH value, mineral acid, reaction temperature, pressure and sorbitol concentrations were studied. A maximum C5/C6 alkane yield of 61.9% was achieved from 20 wt% sorbitol solution (pH = 1.5) under 523 K and 4 MPa H 2 pressure in the fixed-bed reactor. For cassava and corncob hydrolysate, C5/C6 alkane yield of 38.8% and 44.1% were obtained, respectively.
研究领域:
化学工程
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可再生能源
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催化
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Fang Zheng,Lidong Guo,Rundao Chen,Feng Zhou,Zhiguo Zhang,Qiwei Yang,Yiwen Yang,Qilong Ren,Zongbi Bao
The separation of hexane isomer mixtures into their individual components is one of the most important while challenging industrial process to produce high-octane gasoline. Herein robust M(pz)[Ni(CN) 4 ], termed MpzNi (M = Co, Ni, pz = pyrazine) that can realize efficient separation of ternary mixtures into the pure, individual components. As optimal pore channels with double-accessible open metal sites providing the adsorbate-dependent affinity differences for molecular exclusion behavior via temperature programming, CopzNi reached optimum performance with not only exceptional selectivity of linear/monobranched alkanes and monobranched/dibranched alkanes, but also notably higher adsorption capacity than those of the previously reported adsorbents. Breakthrough experiments with equimolar ternary C6 alkane isomers and binary branched mixtures confirmed CopzNi can highly capture n -hexane and 2-methylpentane from their mixtures. The excellent separation efficiency, lower-energy regeneration, scalability, recyclability as well as high stability render the CopzNi a benchmark candidate for implementation in the current separation processes.
研究领域:
化学工程
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材料科学
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分离技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）