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| 1 | Biowaste derived porous carbon sponge for high performance supercapacitors显示文摘Here,an agricultural waste(the stem pith of helianthus annuus,SPHA)is firstly used as the precursor for preparing three-dimensional(3D)porous carbon sponge(PCS).The as-prepared 3D PCS(SPHA-700)possesses unique sponge-like structure,large specific surface area(SSA)and high nitrogen doping level(4.52 at.%),which benefit the enhancement of conductivity(5.8 S cm;)and wettability.As a binder-free electrode for solid-state symmetric supercapacitor,SPHA-700 delivers a relatively high specific capacitance of137.1 F g^(-1)at 0.5 Ag^(-1).Moreover,activated SPHA-700(SPHA-ac-700–2)displays an even higher specific capacitance(403.6 F g^(-1)at 0.5 Ag^(-1))in 6.0 M KOH electrolyte.The SPHA-ac-700–2-based symmetrical supercapacitor can offer high specific capacitance(271 F g^(-1)at 1 Ag^(-1))and good rate capability(82.1%of capacitance retention at 1–80 Ag^(-1))in 6.0 M KOH electrolyte,together with high energy density(23.3 Wh kg^(-1)at 450 W kg^(-1))in 1.0 M Na_(2)SO_(4)electrolyte.Such excellent performance of SPHA-ac-700–2 is believed to have originated from the crushed sponge-like structure,O/N-co-doping(10.6 at.%O and3.3 at.%N),high SSA,large total pore volume,and hierarchical pore structure. | Wenbin Zhang Bei Liu Mei Yang Yijiang Liu Huaming Li Pingle Liu | 2021 | Journal of Materials Science & Technology2021，，36： | 2 |
| 2 | Studies on the liquid- phase amrnoximation of cyclohexanone over a titanium silicates- ieve using on-line ATR-FTIR spectroscopy 显示文摘 | Liu Huajie Liu Pingle You Kuiyi | 2010 | Catal Commun2010，11，10： | 1 |
| 3 | Ultrasound-assisted co-precipitation synthesis of mesoporous Co_(3)O_(4)–CeO_(2)composite oxides for highly selective catalytic oxidation of cyclohexane显示文摘The one-step highly selective oxidation of cyclohexane into cyclohexanone and cyclohexanol as the essential intermediates of nylon-6 and nylon-66 is considerably challenging.Therefore,an efficient and low-cost catalyst must be urgently developed to improve the efficiency of this process.In this study,a Co_(3)O_(4)–CeO2 composite oxide catalyst was successfully prepared through ultrasound-assisted co-precipitation.This catalyst exhibited a higher selectivity to KA-oil,which was benefited from the synergistic effects between Co^(3+))/Co^(2+))and Ce^(4+)/Ce^(3+)redox pairs,than bulk CeO2 and/or Co_(3)O_(4).Under the optimum reaction conditions,89.6%selectivity to KA-oil with a cyclohexane conversion of 5.8%was achieved over Co_(3)O_(4)–CeO2.Its catalytic performance remained unchanged after five runs.Using the synergistic effects between the redox pairs of different transition metals,this study provides a feasible strategy to design high-performance catalysts for the selective oxidation of alkanes. | Shangjun Fu Kuiyi You Zhenpan Chen Taobo Liu Qiong Wang Fangfang Zhao Qiuhong Ai Pingle Liu He’an Luo | 2022 | Frontiers of Chemical Science and Engineering2022，16，8： | 1 |
| 4 | A multi-functional Ru Mo bimetallic catalyst for ultra-efficient C3 alcohols production from liquid phase hydrogenolysis of glycerol显示文摘Ru and Mo bimetallic catalysts supported on active carbon modified by phosphotungstic acid(PW)were designed and applied in glycerol hydrogenolysis reaction.The physicochemical properties of the catalysts were characterized and the presence of active sites was investigated from the perspective of the glycerol hydrogenolysis performance.The MoOxis highly selective for the C—O bond cleavage of glycerol molecules,which can reasonably regulate the strong C—C bond cleavage activity of Ru nanoparticles.By using sequential deposition of Ru and Mo supported on mesoporous PW-C,the characterization results show that the combination of isolated low-valence MoOxwith metal Ru particles can form“MoOx-Ru-PW”,which provides highly catalytic activity toward C—O bond cleavage,selectively producing more C3 alcohols(mainly 1,2(3)-propanediol).The glycerol conversion of 1%Mo/Ru/PW-C catalyst was 59.6%,the selectivity of C3 alcohol was 96.1%,and the selectivity of propanediol(1,2(3)-propanediol)was 94.9%.It is noteworthy that the selectivity of 1,3-propanediol reached 20.7%when the PW was 21.07%(mass).This study provides experimental evidence for the tandem dehydration and hydrogenation mechanism of the multifunctional Mo/Ru/PW-C catalyst. | Guoxiao Cai Wei Xiong Susu Zhou Pingle Liu Yang Lv Fang Hao Hean Luo ChangYi Kong | 2022 | Chinese Journal of Chemical Engineering2022，，11： | 1 |
| 5 | Highly uniform Ni particles with phosphorus and phosphorus and adjacent defects catalyze 1,5-dinitronaphthalene hydrogenation with excellent catalytic performance显示文摘This work proposes a modified activated carbon support,with defects and heteroatoms(N,P-ACs)by nitrogen and phosphorus doping to load non-noble nickel to catalyze aromatic compound hydrogenation.The Ni/N,P-ACs-900(prepared at 900℃)showed promising catalytic activity in liquid-phase 1,5-dinitronaphthalene hydrogenation with a 1,5-diaminonaphthalene yield of 95.8% under the mild condition of 100℃,which is comparable to the commercial Pd/C catalyst.The nitrogen species were burned off at 900℃,causing more defects for nickel metal loading,facilitating the interaction between the supports and the nickel metal,and resulting in highly dispersed metal particles.The computational study of the nickel binding energy has been conducted using density functional theory.It exhibits that the defects formed by heteroatom doping are beneficial to nickel anchoring and deposition to form highly uniform nickel particles.The phosphorus species in combination with the defects are suitable for H_(2) adsorption and dissociation.These results reveal that the heteroatomic doping on the active carbon shows significant effects in the hydrogenation of the liquid-phase aromatic compounds.These findings could provide a promising route for the rational design of aromatic compound hydrogenation catalysts to significantly decrease the cost by instead using noble metal catalysts in the industry. | Wei Xiong Susu Zhou Zeyong Zhao Fang Hao Zhihui Cai Pingle Liu Hailiang Zhang Hean Luo | 2021 | Frontiers of Chemical Science and Engineering2021，15，4： | 1 |
| 6 | Metal salts with highly electronegative cations as efficient catalysts for the liquid-phase nitration of benzene by NO2 to nitrobenzene显示文摘有高度阴电的阳离子的金属盐被用来有效地在没有溶剂的条件下面由没有 2 催化苯的液体阶段硝代到硝基苯。几盐包括 FeCl 3, ZrCl 4, AlCl 3, CuCl 2, NiCl 2, ZnCl 2, MnCl 2, Fe (没有 3)39H2 O ,双性人(没有 3)35H2 O , Zr (没有 3)45H2 O , Cu (没有 3)26H2 O , Ni (没有 3)26H2 O , Zn (没有 3)26H2 O , Fe 2(SO4)3,和 CuSO 4是 examin 到硝基苯的苯变换和选择两个都是超过 99% 。另外,金属 counterion 和在盐的水水合物的存在影响催化活动,这被决定。这个方法简单、有效并且可以有潜在的工业申请前景。 | Shenghui Zhou Kuiyi You Zhengming Yi Pingle Liu Hean Luo | 2017 | Frontiers of Chemical Science and Engineering2017，11，2： | 0 |
| 7 | Zinc modification of Ni-Ti as efficient Ni_(x)Zn_(y)Ti_(1)catalysts with both geometric and electronic improvements for hydrogenation of nitroaromatics显示文摘The catalytic hydrogenation of nitroaromatics is an environmentally friendly technology for aniline production,and it is crucial to develop noble-metal-free catalysts that can achieve chemoselective hydrogenation of nitroaromatics under mild reaction conditions.In this work,zinc-modified Ni-Ti catalysts(Ni_(x)Zn_(y)Ti_(1))were fabricated and applied for the hydrogenation of nitroaromatics hydrogenation.It was found that the introduction of zinc effectively increases the surface Ni density,enhances the electronic effect,and improves the interaction between Ni and TiO_(2),resulting in smaller Ni particle size,more oxygen vacancies,higher dispersion and greater concentration of Ni on the catalyst surface.Furthermore,the electron-rich Ni^(δ-) obtained by electron transfer from Zn and Ti to Ni effectively adsorbs and dissociates hydrogen.The results reveal that Ni_(x)Zn_(y)Ti_(1)(Ni_(0.5)Zn_(0.5)Ti_(1))shows excellent catalytic performance under mild conditions(70℃and 6 bar).These findings provide a rational strategy for the development of highly active non-noble-metal hydrogenation catalysts. | Pingle Liu Yu Liu Yang Lv Wei Xiong Fang Hao Hean Luo | 2022 | Frontiers of Chemical Science and Engineering2022，16，4： | 0 |
| 8 | Mesoporous silicon sulfonic acid as a highly efficient and stable catalyst for the selective hydroamination of cyclohexene with cyclohexylamine to dicyclohexylamine in the vapor phase显示文摘In this work,a new mesoporous silicon sulfonic acid catalyst derived from silicic acid has been successfully prepared by the chemical bonding method.The physicochemical properties of mesoporous silicon sulfonic acid catalysts have been systematically characterized using various techniques.The results demonstrate that sulfonic acid groups have been grafted on silicic acid by forming a new chemical bond(Si-O-S).The mesoporous silicon sulfonic acid exhibits excellent catalytic performance and stability in the vapor phase hydroamination reaction of cyclohexene with cyclohexylamine.Cyclohexene conversion of 61% and 97% selectivity to dicyclohexylamine was maintained after running the reaction for over 350 h at 280℃.The developed mesoporous silicon sulfonic acid catalyst shows advantages of low cost,superior acid site accessibility,and long term reactivity stability.Moreover,a possible catalytic hydroamination reaction mechanism over silicon sulfonic acid was suggested.It has been demonstrated that the sulfonic acid groups of the catalyst play an important role in the hydroamination.The present work provides a simple,efficient,and environmentally friendly method for the hydroamination of cyclohexene to valuable dicyclohexylamine,which also shows important industrial application prospects. | Jingbin Wen Kuiyi You Minjuan Chen Jian Jian Fangfang Zhao Pingle Liu Qiuhong Ai He’an Luo | 2021 | Frontiers of Chemical Science and Engineering2021，15，3： | 0 |
| 9 | One-step synthesis of c-caprolactam via the liquid phase catalytic nitrosation of cyclohexane in the presence of concentrated sulfuric acid显示文摘 | Kuiyi YOU Fangfang ZHAO Xueyan LONG Pingle LIU Qiuhong AI Hean LUO | 2012 | Frontiers of Chemical Science and Engineering2012，6，4： | 0 |
| 10 | Understanding the promotional effects of trace doped Zn in Co/NC for efficient one-pot catalytic conversion of furfural to 2-methyl-tetrahydrofuran显示文摘2-methyl-tetrahydrofuran(2-MTHF)is a promising biofuel or fuel additive with excellent burning property,a versatile new-style solvent in organic synthesis,and an important medical intermediate.In this work,a one-pot selective conversion of furfural(FA)into 2-MTHF was carried out over Zn doped Co/NC catalysts.The Zn-Co/NC-1 catalyst with trace Zn dopant(0.38 wt%)exhibited the best performance(yield of 2-MTHF:93.8%).According to the characterizations,it was found that the Zn not only incorporates into the carbon support but also partially dopes into Co nanoparticles.Subsequently,theoretical calculations demonstrated that the doping of Zn in carbon support can effectively enhance the electron transfer from the support to the metallic Co particle,leading to the electron-rich Co surface.The presence of Zn was found to promote the dissociation of hydrogen and to lower the diffusion barrier of hydrogen atom,in favor of the hydrogenation/hydrodeoxygenation processes.Furthermore,the Zn doped models exhibit much lower barrier in breaking C–OH bond of FOL,resulting in higher activity for hydrodeoxygenation of FOL.These theoretical results are consistent with the in situ FT-IR analysis of adsorption substrates and intermediates over Zn doped catalyst.This work reveals the mechanism of dopant Zn tailoring the electronic structure and catalytic performance of active sites,providing a deep insight into the design of economical and high-performance catalysts for hydrogenation/hydrodeoxygenation of biomass feedstocks. | Lei Huang Liqiang Wang Zonghao Zhang Xinpeng Guo Xiaowen Zhang Johnny Muya Chabu Pingle Liu Feiying Tang | 2022 | Journal of Energy Chemistry2022，31，8： | 0 |
| 11 | Rational construction of high-active CO_(3)O_(4) electrocatalysts for oxygen evolution reaction显示文摘Rational construction of high-efficiency electrocatalysts for oxygen evolution reaction(OER)is critical for renewable-energy technologies,but it is highly challenging to rationally regulate their surface structures to improve the OER performance.Herein,we proposed a“model-etching”strategy to investigate chemical etching of CO_(3)O_(4).The cubic CO_(3)O_(4)nanocrystals enclosed by well-defined facets are synthesized as model crystals,whose uniform surface structures allow us to study the etching mechanism at atomic level.Etching kinetics study together with DFT calculations discloses that{111}facets,the highly active facets for OER,serve as etch-stop facets in the etching reaction and H_(2)SO_(4)molecules play a special role in creating surface Co2^(+),the active center of OER.These results direct us to rationally optimize the surface structures of CO_(3)O_(4) to develop highly active OER electrocatalysts.The favorable performance of overpotential(η)and the Tafel slope decrease even to 268 mV@10 mA·cm−2 and 74 mV·dec−1,respectively.In general,our study shows that chemical etching of model crystals could help us rationally construct high-efficiency electrocatalysts. | Tianyun Zhang Shichao Zhao Chuanming Zhu Jing Shi Chao Su Jiawen Yang Meng Wang Jun Li Junhui Li Pingle Liu Conghui Wang | 2023 | Nano Research2023，16，1： | 0 |
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