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| 1 | Catalytic conversion of lignocellulosic biomass into chemicals and fuels显示文摘In the search of alternative resources to make commodity chemicals and transportation fuels for a low carbon future,lignocellulosic biomass with over 180-billion-ton annual production rate has been identified as a promising feedstock.This review focuses on the state-of-the-art catalytic transformation of lignocellulosic biomass into value-added chemicals and fuels.Following a brief introduction on the structure,major resources and pretreatment methods of lignocellulosic biomass,the catalytic conversion of three main components,i.e.,cellulose,hemicellulose and lignin,into various compounds are comprehensively discussed.Either in separate steps or in one-pot,cellulose and hemicellulose are hydrolyzed into sugars and upgraded into oxygen-containing chemicals such as 5-HMF,furfural,polyols,and organic acids,or even nitrogen-containing chemicals such as amino acids.On the other hand,lignin is first depolymerized into phenols,catechols,guaiacols,aldehydes and ketones,and then further transformed into hydrocarbon fuels,bioplastic precursors and bioactive compounds.The review then introduces the transformations of whole biomass via catalytic gasification,catalytic pyrolysis,as well as emerging strategies.Finally,opportunities,challenges and prospective of woody biomass valorization are highlighted. | Weiping Deng Yunchao Feng Jie Fu Haiwei Guo Yong Guo Buxing Han Zhicheng Jiang Lingzhao Kong Changzhi Li Haichao Liu Phuc T.T.Nguyen Puning Ren Feng Wang Shuai Wang Yanqin Wang Ye Wang Sie Shing Wong Kai Yan Ning Yan Xiaofei Yang Yuanbao Zhang Zhanrong Zhang Xianhai Zeng Hui Zhou | 2023 | Green Energy & Environment2023，8，1： | 6 |
| 2 | Catalytic transfer hydrogenation of biomass-derived furfural to furfuryl alcohol with formic acid as hydrogen donor over CuCs-MCM catalyst显示文摘Catalytic transfer hydroge nation(CTH)of furfural(FF)to furfu ryl alcohol(FFA)has received great intere st in recent years.He rein,Cu-Cs bimetallic supported catalyst,CuCs(2)-MCM,was developed for the CTH of FF to FFA using formic as hydrogen donor.CuCs(2)-MCM achieved a 99.6%FFA yield at an optimized reaction conditions of 170℃,1 h.Cu species in CuCs(2)-MCM had dual functions in catalytically decomposing formic acid to generate hydrogen and hydrogenating FF to FFA.The doping of Cs made the size of Cu particles smaller and improved the dispersion of the Cu active sites.Impo rtantly,the Cs species played a favorable role in enhancing the hydrogenation activity as a promoter by adjusting the surface acidity of Cu species to an appropriate level.Correlation analysis showed that surface acidity is the primary factor to affect the catalytic activity of CuCs(2)-MCM. | Tao Wang Juan Du Yong Sun Xing Tang Zuo-Jun Wei Xianhai Zeng Shi-Jie Liu Lu Lin | 2021 | Chinese Chemical Letters2021，32，3： | 2 |
| 3 | Base-free oxidative esterification of 5-hydroxymethylfurfural to furan-2,5-dimethylcarboxylate over n-doped carbon-supported Co/Fe bimetallic catalyst under batch-operation or continuous-flow conditions显示文摘Developing an efficient and easily available catalyst for the selective conversion of biomass-derived 5-hydroxymethylfurfural(HMF)into furan-2,5-dimethylcarboxylate(FDMC),a valuable biomass-based monomer,remains a high demand but formidable challenge.Herein,a facile strategy for the synthesis of N-doped carbon-supported Co/Fe bimetallic catalyst(CoFe-NC)was developed,which provided an outstanding FDMC yield of 93%in a batch reactor(base-free,80℃,2 bar O_(2),4 h).Interestingly,CoFe-NC also gave a high FDMC yield of 91%under continuous-flow conditions for 80 h(5 bar O_(2),80℃,GHSV 1320 h^(-1),LHSV 0.6 h^(-1),base-free).Notably,it is the first time that a non-noble catalyst gave such a high FDMC yield under continuous-flow conditions.The introduction of Fe could greatly improve both the electron intensity of Co-N_(x)species and basicity of the catalyst,which endowed CoFe-NC with improved O_(2)activation capacity and enhanced dehydrogenation activity for the oxidation-esterification of HMF.This work delineates the efficient strategy on the construction of N-doped carbon-supported non-noble catalyst,which might open a new avenue for developing highly efficient catalyst for FDMC production. | Weizhen Xie Binglin Chen Wenlong Jia Huai Liu Zheng Li Shuliang Yang Xing Tang Xianhai Zeng Yong Sun Xixian Ke Tianyuan Li Huayu Fang Lu Lin | 2022 | Journal of Energy Chemistry2022，，12： | 1 |
| 4 | Estimation of Shallow Subsurface Shear-wave Velocity by Inverting Fundamental and Higher-mode Rayleigh Waves显示文摘 | Song Xianhai Gu Hanming Liu Jiangping | | 0，，： | 1 |
| 5 | BBX11 promotes red light-mediated photomorphogenic development by modulating phyB-PIF4 signaling显示文摘phytochrome B(phyB)acts as the red light photoreceptor and negatively regulates the growth-promoting factor PHYTOCHROME INTERACTING 4(PIF4)through a direct physical interaction,which in turn changes the expression of a large number of genes.phyB-PIF4 module regulates a variety of biological and developmental processes in plants.In this study,we demonstrate that B-BOX PROTEIN 11(BBX11)physically interacts with both phyB and PIF4.BBX11 negatively regulates PIF4 accumulation as well as its biochemical activity,consequently leading to the repression of PIF4-controlled genes’expression and promotion of photomorphogenesis in the prolonged red light.This study reveals a regulatory mechanism that mediates red light signal transduction and sheds a light on phyB-PIF4 module in promoting red light-dependent photomorphognenesis. | Zhaoqing Song Yueqin Heng Yeting Bian Yuntao Xiao Jiujie Liu Xianhai Zhao Yan Jiang Xing Wang Deng Dongqing Xu | 2021 | aBIOTECH2021，2，2： | 1 |
| 6 | Bounded entrepreneurship and internationalisation of indigenous Chinese privateowned firms显示文摘 | Liu Xiaming Wen Xiao and Huang Xianhai | 2007 | International Business Review2007，3，2： | 1 |
| 7 | Converging Cooperative Functions into the Nanospace of Covalent Organic Frameworks for Efficient Uranium Extraction from Seawater显示文摘The extraction of uranium from seawater is challenging though it offers tremendous potential for the sustainable production of nuclear fuel for the energy sector.Herein,we report a new strategy for efficient extraction of uranium from seawater via converging the cooperative functions of adsorption-photocatalysis into the nanospace of covalent organic frameworks(COFs).Functionalization of the organic linkers in the multicomponent COFs allowed exploration of the relationship between material composition and adsorption-photocatalytic activity for uranium extraction.The presence of amidoxime groups in the COFs offered selective binding sites for uranyl,whilst triazine units and bipyridine-Pd groups acted cooperatively to photocatalytically reduce adsorbed U(Ⅵ)to a U(Ⅳ)solid product(UO2)for facile collection.One of our developed COFs,4-Pd-AO,displayed exceptional performance in sequestering and reducing uranyl from natural seawater,with a high extraction capacity of 4.62 mg U/g per day(average data)under visible light irradiation.Mechanistic studies revealed that 4-Pd-AO not only reduced adsorbed uranyl(Ⅵ)to U(Ⅳ)O_(2),but also generated ^(1)O_(2) and superoxide radicals under visible light excitation,thus affording excellent antibacterial and antialgal activities(i.e.,antibiofouling properties)for sustained efficient uranium extraction performance.This proof-ofconcept study establishes multicomponent COFs as promising candidates for efficient uranium extraction from seawater. | Mengjie Hao Zhongshan Chen Xiaolu Liu Xianhai Liu Juyao Zhang Hui Yang Geoffrey I.N.Waterhouse Xiangke Wang Shengqian Ma | 2022 | CCS Chemistry2022，4，7： | 1 |
| 8 | Automatic segmentation of gas plumes from multibeam water column images using a U-shape network显示文摘Cold seeps are widely developed on the seabed of continental margins and can form gas plumes due to the upward migration of methane-rich fluids.The detection and automatic segmentation of gas plumes are of great significance in locating and studying the cold seep system that is usually accompanied by hydrate layers in the subsurface.A multibeam echo-sounder system(MBES)can record the complete backscatter intensity of the water column,and it is one of the most effective means for detecting cold seeps.However,the gas plumes recorded in multibeam water column images(WCI)are usually blurred due to the interference of the complicated water environment and the sidelobes of the MBES,making it difficult to obtain the effective segmentation.Therefore,based on the existing UNet semantic segmentation network,this paper proposes an AP-UNet network combining the convolutional block attention module and the pyramid pooling module for the automatic segmentation and extraction of gas plumes.Comparative experiments are conducted among three traditional segmentation methods and two deep learning methods.The results show that the AP-UNet segmentation model can effectively suppress complicated water column noise interference.The segmentation precision,the Dice coefficient,and the recall rate of this model are 92.09%,92.00%,and 92.49%,respectively,which are 1.17%,2.10%,and 2.07%higher than the results of the UNet. | Fanlin YANG Feng WANG Zhendong LUAN Xianhai BU Sai MEI Jianxing ZHANG Hongxia LIU | 2023 | Journal of Oceanology and Limnology2023，41，5： | 0 |
| 9 | Effects of Storage Temperature on Postharvest Physiology of Amorphophallus cormifer Microbulb显示文摘[Objectives]The paper was to explore the optimum storage temperature of Amorphophallus cormifer microbulbs.[Methods]With A.cormifer as the raw material,the effects of different storage temperatures(4,12 and 20℃)on postharvest physiology of A.cormifer during the storage period of 80 d were investigated.[Results]There was no significant difference in starch content among the treatments,and the content of reducing sugar at 4℃was significantly higher than those of other treatments during the storage period.There was no significant difference in total water content among treatments,and the specific gravity of free water at 4℃was significantly lower than those at 12 and 20℃,respectively.At 60 d post storage,the POD activity at 4℃was significantly higher than those at 12 and 20℃,respectively.At the 80th day of storage,the PPO activity at 4℃was significantly lower than those at 12 and 20℃,respectively.[Conclusions]The low temperature of 4℃is more conducive to the storage of A.cormifer microbulbs,and the results also provide the theoretical basis for long-term storage of A.cormifer bulbs. | Weifang LI Bo WEI Zifan LIU Xianhai ZENG Denglang PAN | 2021 | Asian Agricultural Research2021，13，12： | 0 |
| 10 | Catalyst design strategy toward the efficient heterogeneously-catalyzed selective oxidation of 5-hydroxymethylfurfural显示文摘The selective oxidation of 5-hydroxymethylfurfural(HMF),a versatile bio-based platform molecule,leads to the formation of several intriguing and useful downstream chemicals,such as 2,5-diformylfuran(DFF),5-hydroxymethyl-2-furancarboxylic acid(HMFCA),formyl 2-furancarboxylic acid(FFCA),2,5-furandicarboxylic acid(FDCA) and furan-2,5-dimethylcarboxylate(FDMC).These products have been extensively employed to fabricate novel polymers,pharmaceuticals,sustainable dyes and many other value-added fine chemicals.The heart of the developed HMF oxidation processes is always the catalyst.In this regard,this review comprehensively summarized the established heterogeneous catalyst design strategy for the selective oxidation of HMF via thermo-catalysis.Particular attention has been focused on the reaction mechanism of HMF oxidation over different catalysts as well as enhancing the catalytic performance of the catalyst through manipulating the properties of the support and fabricating of multi-component metal nano-particles and oxides.The current challenges and possible research directions for the catalytic oxidation of HMF in the future are also discussed. | Huai Liu Xing Tang Xianhai Zeng Yong Sun Xixian Ke Tianyuan Li Jiaren Zhang Lu Lin | 2022 | Green Energy & Environment2022，7，5： | 0 |
| 11 | One-pot tandem conversion of fructose into biofuel components with in-situ generated catalyst system显示文摘In this contribution, one-pot tandem conversion of fructose into biofuel components, including 5-ethoxymethylfurfural(EMF), 2,5-(bis(ethoxymethyl)furan(BEMF) and ethyl levulinate(EL), was performed in an in-situ generated catalyst system through consecutive dehydration, etherification, and transfer hydrogenation. Specifically, ZrOCl_2·8H_2O was in-situ decomposed into HCl and ZrO(OH)_2 in ethanol, which effectively catalyzed the dehydration/etherification of fructose to 5-ethoxymethylfurfural(EMF) and subsequent reductive etherification of EMF using ethanol as H-donor, respectively. EMF, BEMF and EL were detected as the main products, and total yield of detectable products of up to 65.4% was obtained at 200 ℃ in only 2 h. | Huai Liu Xing Tang Weiwei Hao Xianhai Zeng Yong Sun Tingzhou Lei Lu Lin | 2018 | Journal of Energy Chemistry2018，27，2： | 0 |
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