Li Wang

Tianjin University

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Co-Authors

Xiangwen Zhang

Tianjin University

206

Ji‐Jun Zou

Tianjin University

100

Guozhu Liu

Tianjin University

Lun Pan

Tianjin University

Guozhu Li

Collaborative Innovation Center of Chemical Science and Engineering Tianjin

Zhentao Mi

China Academy Of Machinery Science & Technology (China)

Zhourong Xiao

State Key Laboratory of Metastable Materials Science and Technology

Guozhu Liu

Tianjin University

Qingfa Wang

Collaborative Innovation Center of Chemical Science and Engineering Tianjin

Chan Wu

Southeast University

Cooperative Institutions

Tianjin University

289

Chinese Academy of Sciences

119

Collaborative Innovation Center of Chemical Science and Engineering Tianjin

108

University of Chinese Academy of Sciences

Jilin University

Sichuan University

Zhejiang University

Huazhong University of Science and Technology

State Key Laboratory of Chemical Engineering

Dalian University of Technology

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Hydrophobic mesoporous acidic resin for hydroxyalkylation/alkylation of 2‐methylfuran and ketone to high‐density biofuel

AIChE Journal (2016)

Xiangwen Zhang Qiang Deng Peijuan Han Jisheng Xu Lun Pan

Hydroxyalkylation/alkylation of biomass‐derived 2‐methylfuran with cyclic ketones (cyclopentanone and cyclohexanone) has great potential in synthesizing high‐density biofuel. But the conversion and selectivity are still unsatisfactory because the in‐situ formed water decreases the acidity of catalyst and induces side reaction. Herein, hydrophobic mesoporous resins with sulfonic acid group (PS) and fluoride sulfonic acid group (PCS) were synthesized by a simple solvothermal reaction and ion exchange treatment, which have good mesoporous structure with surface area of 300–700 m 2 /g. Notably, PS and PCS have better hydrophobicity and oleophilicity as compared to widely used sulfonic acid functional amberlyst‐15 and fluoride sulfonic acid functional nafion‐212. In the hydroxyalkylation/alkylation reaction, PS shows higher activity and selectivity than amberlyst‐15 while PCS surpasses nafion‐212. Furthermore, both PS and PCS have good recycling stability in consecutive 5 runs. After hydrodeoxygenation, two high‐density biofuels with density of 0.819 and 0.825 g/mL were obtained. © 2016 American Institute of Chemical Engineers AIChE J , 63: 680–688, 2017

Sulfonic acid

10.1002/aic.15410

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Citations (67)

Engineering Cobalt Defects in Cobalt Oxide for Highly Efficient Electrocatalytic Oxygen Evolution

ACS Catalysis (2018)

Rongrong Zhang Yong‐Chao Zhang Lun Pan Guoqiang Shen Nasir Mahmood

Defect engineering is an effective way to modulate the electric states and provide active sites for electrocatalytic reactions. However, most studied oxygen vacancies are unstable and susceptible under the oxygen circumstance. Here, we fabricated cobalt-defected Co3–xO4 in situ for an efficient oxygen evolution reaction (OER). XAFS and PALS characterizations show that the crystals have abundant Co vacancies and a distorted structure. DFT calculations indicate that the metal defects lead to obvious electronic delocalization, which enhances the carrier transport to participate in water-splitting reactions along the defective conducting channels and the water adsorption/activation on the catalyst surface. Therefore, cobalt-defected Co3–xO4 shows remarkably high OER activity by delivering a much lower overpotential of 268 mV@10 mA cm–2 (with a small Tafel slope of 38.2 mV/dec) for OER in KOH electrolyte, in comparison with normal Co3O4 (376 mV), IrO2 (340 mV), and RuO2 (276 mV). This work opens up a promising approach to construct electronic delocalization structures in metal oxides for high-performance electrochemical catalysts.

Oxygen evolution

Overpotential

Cobalt oxide

10.1021/acscatal.8b01046

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Citations (497)

Promotional Effects of Cesium Promoter on Higher Alcohol Synthesis from Syngas over Cesium-Promoted Cu/ZnO/Al₂O₃ Catalysts

ACS Catalysis (2016)

Jie Sun Qiuxia Cai Yan Wan Shaolong Wan Li Wang

The promotional effects of a cesium promoter on higher alcohol (C2+OH) synthesis from syngas over Cs2O-Cu/ZnO/Al2O3 catalysts were investigated using a combined experimental and density functional theory (DFT) calculation method. In the presence of a cesium promoter, the C2+OH productivity increases from 77.1 to 157.3 g kgcat–1 h–1 at 583 K due to the enhancement of the initial C–C bond formation. A detailed analysis of chain growth probabilities (CGPs) confirms that initial C–C bond formation is the rate-determining step in the temperature range of 543–583 K. Addition of a cesium promoter significantly increases the productivities of 2-methyl-1-propanol, while the CGP values (C3* to 2-methyl-C3*) are almost unaffected. With the assistance of a cesium promoter, the CGPs of the initial C–C bond formation step (C1* to C2*) increase from 0.13 to 0.25 at 583 K. DFT calculations indicate that the initial C–C bond formation during syngas synthesis over the ZnCu(211) model surface is mainly due to the HCO + HCO coupling. In the presence of Cs2O, the stabilities of key intermediates such as HCO and H2CO are enhanced, which facilitates both HCO + HCO and HCO + H2CO coupling steps with lower activation barriers. In addition, Bader charge analysis suggests that the presence of cesium ions could facilitate nucleophilic coupling between HCO and H2CO for the initial C–C bond formation.

Caesium

Bond cleavage

10.1021/acscatal.6b00935

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Citations (88)

Ensemble learning directed classification and regression of hydrocarbon fuels

Fuel (2022)

Runze Liu Yifan Liu Jinyu Duan Fang Hou Li Wang

Overfitting

Ensemble Learning

Boosting

Flash point

10.1016/j.fuel.2022.124520

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Citations (7)

Carbon nitride with simultaneous porous network and O-doping for efficient solar-energy-driven hydrogen evolution

Nano Energy (2015)

Zhen‐Feng Huang Jiajia Song Lun Pan Ziming Wang Xue‐Qiang Zhang

Graphitic carbon nitride

Carbon nitride

Carbon fibers

10.1016/j.nanoen.2015.01.043

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Citations (587)

Tailoring the catalytic performance of single platinum anchored on graphene by vacancy engineering for propane dehydrogenation: a theoretical study

Physical Chemistry Chemical Physics (2021)

Ziwei Zhai Bofeng Zhang Li Wang Xiangwen Zhang Guozhu Liu

Single platinum anchored on graphene by vacancy engineering for propane dehydrogenation.

Propane

10.1039/d1cp02631c

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Citations (6)

Adsorption of Pb(II) ions in aqueous solutions by common reed ash-derived SBA-15 modified by amino-silanes

Desalination and Water Treatment (2014)

Ronghua Li Meng Zhang Yang Ya-ti Zengqiang Zhang Rui Qin

Amino, di-amino, and tri-amino groups functionalized mesoporous silica (N-SBA-15, 2 N-SBA-15, and 3 N-SBA-15) were synthesized using reed ash as silica source. Batch experiments were conducted to investigate the impact of contact time, adsorbent dosage, solution pH, temperature, and concentration of Pb(II) ions onto SBA-15, N-SBA-15, 2 N-SBA-15, and 3 N-SBA-15. The results revealed that the overall adsorption process well fitted the pseudo-second-order kinetic model. The maximum adsorption capacity of N-SBA-15, 2 N-SBA-15, and 3 N-SBA-15 for Pb(II) was 108.16, 102.77, and 93.65 mg/g at 298 K, respectively. The adsorption capacities increased with the increase in temperatures and with the decrease in soluble salt concentrations. Thermodynamics analysis showed that the adsorptions of Pb(II) were feasible, spontaneous, and exothermic in nature. The capacity of the modified SBA-15 did not lose significantly after six adsorption–desorption cycles. The Pb(II) adsorption process was dominated by chemical adsorption process. The results suggested that reed ash was an ideal silica source to prepare N-SBA-15, 2 N-SBA-15, and 3 N-SBA-15 for the removal of Pb(II) ions from aqueous solutions.

Silanes

10.1080/19443994.2014.927798

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Citations (9)

Breaking the activity-selectivity trade-off of Pt nanoparticles encapsulated in UiO-66 for hydrogenation by constructing suitable hierarchical structure

Mengya Guo Yuzhe Du Mingwei Zhang Li Wang Xiangwen Zhang

10.1021/scimeetings.2c00614

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Citations (0)

Deactivation and regeneration of titanium silicalite catalyst for epoxidation of propylene

Journal of Molecular Catalysis A Chemical (2007)

Qingfa Wang Li Wang Junxia Chen Yulong Wu Zhentao Mi