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中国化学工程学报（英文版）
中国化学工程学报（英文版）

廖叶华

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1004-9541

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010-64980783

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中国化学工程学报（英文版）/Journal Chinese Journal of Chemical EngineeringCSCDCSTPCD北大核心EISCI
查看更多>>The Chinese Journal of Chemical Engineering (Bimonthly, started in 1982) is the official journal of the Chemical Industry and Engineering Society of China and published by the Chemical Industry Press. The aim of the journal is to develop the international exchange of scientific and technical information in the field of chemical engineering. It publishes original research papers that cover the major advancements and achievements in chemical engineering in China as well as some articles from overseas contributors. The topics of journal include chemical engineering, chemical technology, biochemical engineering, energy and environmental engineering and other relevant fields. Papers are published on the basis of their relevance to theoretical research, practical application or potential uses in the industry as Research Papers, Research Notes, Chemical Engineering Data and Reviews. Prominent domestic and overseas chemical experts and scholars have been invited to form an International Advisory Board and the Editorial Committee. It enjoys recognition among Chinese academia and industry as a reliable source of information of what is going on in chemical engineering research, both domestic and abroad.
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    Study on metal recovery process and kinetics of oxidative leaching from spent LiFePO4 Li-batteries

    Xiaoming ZhangWen XieXiaolei ZhouWenjie Zhang...
    94-102页
    查看更多>>摘要：A green environmental protection and enhanced leaching process was proposed to recover all elements from spent lithium iron phosphate(LiFePO4)lithium batteries.In order to reduce the influence of Al impurity in the recovery process,NaOH was used to remove impurity.After impurity removal,the spent LiFePO4 cathode material was used as raw material under the H2SO4 system,and the pressure oxidation leaching process was adopted to achieve the preferential leaching of lithium.The E-pH diagram of the Fe-P-Al-H2O system can determine the stable region of each element in the recovery process of spent LiFePO4 Li-batteries.Under the optimal conditions(500 r·min-1,15 h,363.15 K,0.4 MPa,the liquid-solid ratio was 4∶1 ml·g-1 and the acid-material ratio was 0.29),the leaching rate of Li was 99.24％,Fe,Al,and Ti were 0.10％,2.07％,and 0.03％,respectively.The Fe and P were precipitated and recovered as FePO4·2H2O.The kinetic analysis shows that the process of high-pressure acid leaching of spent LiFePO4 materials depends on the surface chemical reaction.Through the life cycle assessment(LCA)of the spent LiFePO4 whole recovery process,eight midpoint impact categories were selected to assess the impact of recovery process.The results can provide basic environmental information on production process for recycling industry.
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    Recent progress on nanomaterial-based electrochemical dissolved oxygen sensors

    Shaoqi ZhangTao LiuZhenyu ChuWanqin Jin...
    103-119页
    查看更多>>摘要：Dissolved oxygen(DO)usually refers to the amount of oxygen dissolved in water.In the environment,medicine,and fermentation industries,the DO level needs to be accurate and capable of online moni-toring to guide the precise control of water quality,clinical treatment,and microbial metabolism.Compared with other analytical methods,the electrochemical strategy is superior in its fast response,low cost,high sensitivity,and portable device.However,an electrochemical DO sensor faces a trade-off between sensitivity and long-term stability,which strongly limits its practical applications.To solve this problem,various advanced nanomaterials have been proposed to promote detection performance owing to their excellent electrocatalysis,conductivity,and chemical stability.Therefore,in this review,we focus on the recent progress of advanced nanomaterial-based electrochemical DO sensors.Through the comparison of the working principles on the main analysis techniques toward DO,the advantages of the electrochemical method are discussed.Emphasis is placed on recently developed nanomaterials that exhibit special characteristics,including nanostructures and preparation routes,to benefit DO determi-nation.Specifically,we also introduce some interesting research on the configuration design of the electrode and device,which is rarely introduced.Then,the different requirements of the electrochemical DO sensors in different application fields are included to provide brief guidance on the selection of appropriate nanomaterials.Finally,the main challenges are evaluated to propose future development prospects and detection strategies for nanomaterial-based electrochemical sensors.
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    Synthesis of boron nitride nanorod and its performance as a metal-free catalyst for oxidative desulfurization of diesel fuel

    Tanaz GhanadiGholamreza MoradiAlimorad Rashidi
    120-132页
    查看更多>>摘要：In order to reduce the sulfur compounds in diesel fuel,boron nitride(BN)has been used as a novel metal-free catalyst in the present research.This nanocatalyst was synthesized via template-free approach followed by heating treatment at 900 ℃ in nitrogen atmosphere that the characteristics of the sample were identified by the X-ray diffraction,Fourier-transform infrared spectroscopy,Raman spectroscopy,field emission scanning electron microscopy,transmission electron microscopy,atomic force microscopy,and N2 adsorption-desorption isotherms.The results of structural and morphological analysis repre-sented that BN has been successfully synthesized.The efficacy of the main operating parameters on the process was studied by using response surface methodology based on the Box-Behnken design method.The prepared catalyst showed high efficiency in oxidative desulfurization of diesel fuel with initial sulfur content of 8040 mg·kg-1 S.From statistical analysis,a significant quadratic model was obtained to predict the sulfur removal as a function of efficient parameters.The maximum efficiency of 72.4％was achieved under optimized conditions at oxidant/sulfur molar ratio of 10.2,temperature of 71 ℃ reaction time of 113 min,and catalyst dosage of 0.36 g.Also,the reusability of the BN was studied,and the result showed little reduction in activity of the catalyst after 10 times regeneration.Moreover,a plausible mechanism was proposed for oxidation of sulfur compounds on the surface of the catalyst.The present study shows that BN materials can be selected as promising metal-free catalysts for desulfurization process.
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    Nitric oxide removal from flue gas coupled with the FeⅡEDTA regeneration by ultraviolet irradiation

    Yuan XuZiwei LiuYing DaiJinbo Ouyang...
    133-143页
    查看更多>>摘要：During wet complexation denitrification of flue gas,FeⅡEDTA regeneration,also known as reducing FeⅢEDTA and FeⅡEDTA-nitric oxide(NO)to FeⅡEDTA,is crucial.In this paper,ultraviolet(UV)light was used for the first time to reduce FeⅡEDTA-NO.The experimental result demonstrated that FeⅡEDTA-NO reduction rate increased with UV power increasing,elevated temperature,and initial FeⅡEDTA-NO concentration decreasing.FeⅡEDTA-NO reduction rate increased first and then decreased as pH value increased(2.0-10.0).FeⅡEDTA-NO reduction with UV irradiation presented a first order reaction with respect to FeⅡEDTA-NO.Compared with other FeⅡEDTA regeneration methods,FeⅡEDTA regeneration with UV show more superiority through comprehensive consideration of regeneration rate and pro-cedure.Subsequently,NO absorption experiment by FeⅡEDTA solution with UV irradiation confirmed that UV can significantly promote the NO removal performance of FeⅡEDTA.Appropriate oxygen concentra-tion(3％(vol))and acidic environment(pH=4)was favorable for NO removal.With UV power increasing as well as temperature decreasing,NO removal efficiency rose.In addition,the mechanism research indicates that NO from flue gas is mostly converted to NO2,NO3,NH4,N2,and N2O with FeⅡEDTA ab-sorption liquid with UV irradiation.UV strengthens NO removal in FeⅡEDTA absorption liquid by forming a synergistic effect of oxidation-reduction-complexation.Finally,compared with NO removal methods with FeⅡEDTA,FeⅡEDTA combined UV system shows prominent technology advantage in terms of economy and secondary pollution.
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    Efficient and rapid capture of uranium(Ⅵ)in wastewater via multi-amine modified β-cyclodextrin porous polymer

    Xing ZhongYubin TanSiyuan WuCaixia Hu...
    144-155页
    查看更多>>摘要：It is quite important to ensure the safety and sustainable development of nuclear energy for the treat-ment of radioactive wastewater.To treat radioactive wastewater efficiently and rapidly,two multi-amineβ-cyclodextrin polymers(diethylenetriamine β-cyclodextrin polymer(DETA-TFCDP)and triethylene-tetramine β-cyclodextrin polymer(TETA-TFCDP))were prepared and applied to capture uranium.Results exhibited that DETA-TFCDP and TETA-TFCDP displayed the advantages of high adsorption amounts(612.2 and 628.2 mg·g-1,respectively)and rapid adsorption rates,which can reach(88±1)％of their equi-librium adsorption amounts in 10 min.Moreover,the adsorbent processes of DETA-TFCDP and TETA-TFCDP on uranium(Ⅵ)followed the Langmuir model and pseudo-second-order model,stating they were mainly chemisorption and self-endothermic.Besides,TETA-TFCDP also showed excellent selectivity in the presence of seven competing cations and could be effectively reused five times via Na2CO3 as the desorption reagent.Meanwhile,X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy illustrated that the enriched multi-amine groups and oxygen-containing functional groups on the surface of TETA-TFCDP were the main active sites for capturing uranium(Ⅵ).Hence,multi-amine β-cyclodextrin polymers are a highly efficient,rapid,and promising adsorbent for capturing uranium(Ⅵ)from radioactive wastewater.
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    Porous nanofibrous dressing enables mesenchymal stem cell spheroid formation and delivery to promote diabetic wound healing

    Kexin ZhangWenmin ZhangHeng AnZhe Huang...
    156-164页
    查看更多>>摘要：Delayed and nonhealing of diabetic wounds imposes substantial economic burdens and physical pain on patients.Mesenchymal stem cells(MSCs)promote diabetic wound healing.Particularly when MSCs aggregate into multicellular spheroids,their therapeutic effect is enhanced.However,traditional culture platforms are inadequate for the efficient preparation and delivery of MSC spheroids,resulting in in-efficiencies and inconveniences in MSC spheroid therapy.In this study,a three-dimensional porous nanofibrous dressing(NFD)is prepared using a combination of electrospinning and homogeneous freeze-drying.Using thermal crosslinking,the NFD not only achieves satisfactory elasticity but also maintains notable cytocompatibility.Through the design of its structure and chemical composition,the NFD allows MSCs to spontaneously form MSC spheroids with controllable sizes,serving as MSC spheroid delivery systems for diabetic wound sites.Most importantly,MSC spheroids cultured on the NFD exhibit improved secretion of vascular endothelial growth factor,basic fibroblast growth factor,and hepatocyte growth factor,thereby accelerating diabetic wound healing.The NFD provides a competitive strategy for MSC spheroid formation and delivery to promote diabetic wound healing.
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    Microwave irradiation-induced alterations in physicochemical properties and methane adsorption capability of coals:An experimental study using carbon molecular sieve

    Xuexiang FuXing TangYi XuXintao Zhou...
    165-180页
    查看更多>>摘要：In order to comprehend the applicability of microwave irradiation for recovering coalbed methane,it is necessary to evaluate the microwave irradiation-induced alterations in coals with varying levels of metamorphism.In this work,the carbon molecular sieve combined with KMnO4 oxidation was selected to fabricate carbon molecular sieve with diverse oxidation degrees,which can serve as model substances toward coals.Afterwards,the microwave irradiation dependences of pores,functional groups,and high-pressure methane adsorption characteristics of model substances were studied.The results indicated that microwave irradiation causes rearrangement of oxygen-containing functional groups,which could block the micropores with a size of 0.40-0.60 nm in carbon molecular sieve;meanwhile,naphthalene and phenanthrene generated by macro-molecular structure pyrolysis due to microwave irradiation could block the micropores with a size of 0.70-0.90 nm.These alterations in micropore structure weaken the saturated methane adsorption capacity of oxidized carbon molecular sieve by 2.91％-23.28％,suggesting that microwave irradiation could promote methane desorption.Moreover,the increased mesopores found for oxidized carbon molecular sieve after microwave irradiation could benefit CH4 diffusion.In summary,the oxidized carbon molecular sieve can act as model substances toward coals with different ranks.Additionally,microwave irradiation is a promising technology to enhance coalbed methane recovery.
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    Engineering oxygen vacancies on Tb-doped ceria supported Pt catalyst for hydrogen production through steam reforming of long-chain hydrocarbon fuels

    Zhourong XiaoChangxuan ZhangPeng LiDesong Wang...
    181-192页
    查看更多>>摘要：Steam reforming of long-chain hydrocarbon fuels for hydrogen production has received great attention for thermal management of the hypersonic vehicle and fuel-cell application.In this work,Pt catalysts supported on CeO2 and Tb-doped CeO2 were prepared by a precipitation method.The physical structure and chemical properties of the as-prepared catalysts were characterized by powder X-ray diffraction,scanning electron microscopy,transmission electron microscopy,Raman spectroscopy,H2 temperature programmed reduction,and X-ray photoelectron spectroscopy.The results show that Tb-doped CeO2 supported Pt possesses abundant surface oxygen vacancies,good inhibition of ceria sintering,and strong metal-support interaction compared with CeO2 supported Pt.The catalytic performance of hydrogen production via steam reforming of long-chain hydrocarbon fuels(n-dodecane)was tested.Compared with 2Pt/CeO2,2Pt/Ce0.9Tb0.1O2,and 2Pt/Ce0.5Tb0.5O2,the 2Pt/Ce0.7Tb0.3O2 has higher activity and sta-bility for hydrogen production,on which the conversion of n-dodecane was maintained at about 53.2％after 600 min reaction under 700 ℃ at liquid space velocity of 9 ml·g-1·h-1.2Pt/CeO2 rapidly deacti-vated,the conversion of n-dodecane was reduced to only 41.6％after 600 min.
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    Design method of extractant for liquid-liquid extraction based on elements and chemical bonds

    Yuwen WeiChunling ZhangYue ZhangLili Wang...
    193-202页
    查看更多>>摘要：In the petrochemical industry process,the relative volatility between the components to be separated is close to one or the azeotrope that systems are difficult to separate.Liquid-liquid extraction is a common and effective separation method,and selecting an extraction agent is the key to extraction technology research.In this paper,a design method of extractants based on elements and chemical bonds was proposed.A knowledge-based molecular design method was adopted to pre-select elements and chemical bond groups.The molecules were automatically synthesized according to specific combination rules to avoid the problem of"combination explosion"of molecules.The target properties of the extractant were set,and the extractant meeting the requirements was selected by predicting the cor-relation physical properties of the generated molecules.Based on the separation performance of the extractant in liquid-liquid extraction and the relative importance of each index,the fuzzy compre-hensive evaluation membership function was established,the analytic hierarchy process determined the mass ratio of each index,and the consistency test results were passed.The results of case study based on quantum chemical analysis demonstrated that effective determination of extractants for the analysis of benzene-cyclohexane systems.The results unanimously prove that the method has important theo-retical significance and application value.
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    Influence of syngas components and ash particles on the radiative heat transfer in a radiant syngas cooler

    Chen HanYoumin SituHuaxing ZhuJianliang Xu...
    203-215页
    查看更多>>摘要：Radiant syngas cooler(RSC)is widely used as a waste heat recovery equipment in industrial gasification.In this work,an RSC with radiation screens is established and the impact of gaseous radiative property models,gas components,and ash particles on heat transfer is investigated by the numerical simulation method.Considering the syngas components and the pressure environment of the RSC,a modified weighted-sum-of-gray-gases model was developed.The modified model shows high accuracy in vali-dation.In computational fluid dynamics simulation,the calculated steam production is only 0.63％in error with the industrial data.Compared with Smith's model,the temperature decay along the axial direction calculated by the modified model is faster.Syngas components are of great significance to heat recovery capacity,especially when the absorbing gas fraction is less than 10％.After considering the influence of particles,the outlet temperature and the proportion of radiative heat transfer are less affected,but the difference in steam output reaches 2.7 t·h-1.The particle deposition on the wall greatly reduces the heat recovery performance of an RSC.
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