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Catalyst-modified perovskite hollow fiber membrane for oxidative coupling of methane

Chinese Journal of Chemical Engineering 2022年第1期35卷 412-419页

作者： Jian Song Claudia Li Shao Zhang Xiuxia Meng Bo Meng Jaka sunarso Department of Chemical Engineering Shandong University of TechnologyZibo 255049China State Key Laboratory of Separation Membranes and Membrane Processes Department of Chemical EngineeringTiangong UniversityTianjin 300387China Research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyJalan Simpang Tiga93350 KuchingSarawakMalaysia

The catalytic oxidative cou pling of methane(OCM)to C_(2) hydrocarbons(C_(2)H_(6) and C_(2)H_(4))represents one of the most effective ways to convert natural gas to more useful products,which can be performed effectively using La_(0.6)Sr0.4Co_(0.2)Fe_(0.8)O_(3-δ)(LSCF)perovskite hollow fiber membrane *** this work,the effects of adding a thin BaCe_(0.8)Gd_(0.2)O_(3-δ)(BCG)catalyst film onto the inner LSCF fiber surface as the OCM catalyst and a porous Ba0.5Sr_(0.5)Co_(0.8)Fe_(0.2)O_(3-δ)(BSCF)perovskite layer onto the outer LSCF surface to improve the oxygen permeation were *** 700℃and 1000℃,methane conversion increased in the order of uncoated,BCG and BSCF-coated,and BCG-coated LSCF hollow fiber while Coselectivity and C_(2)-yield increased in the order of BCG and BSCF-coated,uncoated,and BCG-coated LSCF hollow *** permeation flux at the same temperature range,on the other hand,was enhanced in the order of uncoated,BCG-coated,and BCG and BSCF-coated LSCF hollow *** finding demonstrates the complex interplay between oxygen permeation and OCM *** BCG and BSCFcoated hollow fiber was also subjected to thermal cycles between 850℃and 900℃for up to 175 hours during which the fiber showed minor degradation in oxygen permeation fluxes and relatively stable OCM performance.

关键词： Hollow fiber Membrane reactor Oxidative coupling of methane(OCM) Perovskite

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Enhancement of oxygen evolution reaction activity and durability of Ba0.5Sr0.5Co0.8Fe0.2O3-δ by CO2 thermal treatment

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Journal of Materials Science & Technology 2019年第6期35卷 1184-1191页

作者： Fengli Liang Ziqiong Yang Haipeng Deng Jaka sunarso Lili Yang Junkui Mao College of Energy and Power Engineering.Jiangsu Province Key Laboratory of Aerospace Power System Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Research Centre for Sustainable Technologies Faculty of Engineering Computing and Science Swinburne University of Technology Jalan Simpang Tiga93350 Kuching Sarawak Malaysia

This work demonstrates that in situ formation of carbonate layer on the surface of Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF)obtained by exposure to CO2 during heating between 500℃ and 700℃ can provide enhanced oxygen evolution reaction(OER)performance and durability in an alkaline solution relative to the original *** temperatures,i.e., 500℃,600℃,and 700℃ were chosen to perform the CO2 thermal treatment,resulting into BSCF-500,BSCF-600,and BSCF-700 *** OER was enhanced in the order of BSCF-500< BSCF-700 < BSCF-600. BSCF-600 showed the best OER performance, i.e., a low overpotential of 0.36 V required to attain 10 mA cm^-2 current density as well as a mass activity of 74.14 Agcmcat-1 and a specific activity of 5.04 mA cmcat-2 at an overpotential of 0.4 V. The OER performance durability of BSCF-600 was highlighted by its ability to maintain a stable potential of around 1.61 V vs. RHE (RHE: reversible hydrogen electrode) when charged at a constant current density of 10 mA cm^-2 throughout the 800 min continuous chronopotentiometry test. The enhanced OER performance for BSCF-600 relative to the original BSCF is attributed to three factors:(i) higher electrochemically active surface area;(ii) faster charge transfer rate and higher electrical conductivity;and (iii) modified oxidation state of cobalt ions. The formation of thin carbonate layer in BSCF-600 appears to suppress the durability issue observed in BSCF.

关键词： Carbonate Electrocatalysis Oxygen evolution reaction Perovskite Water splitting

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Removal of copper ions from aqueous solution by adsorption using LABORATORIES-modified bentonite （organo-bentonite）

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Frontiers of Chemical Science and Engineering 2012年第1期6卷 58-66页

作者： Sandy Velycia MARAMIS Alfin KURNIAWAN Aning AYUCITRA Jaka sunarso Suryadi ISMADJI Department of Chemical Engineering Widya Mandala Surabaya Catholic UniversitySurabaya 60114Indonesia Australian Research Council(ARC)Centre of Excellence for Elcctromaterials Science Institute for Technology Research and InnovationDeakin UniversityVictoria 3125Australia

Equilibrium, kinetic and thermodynamic aspects of the adsorption of copper ions from an aqueous solution using linear alkylbenzene sulfonate （LABORA- TORIES） modified bentonite （organo-bentonite） are reported. Modification of bentonite was performed via microwave heating with a concentration of LABORA- TORIES surfiactant equivalent to 1.5 times that of the cation exchange capacity （CEC） of the raw bentonite. Experimental parameters affecting the adsorption process such as pH, contact time and temperature were studied. Several adsorption equations （e.g., Langmuir, Freundlich, Sips and Toth） with temperature dependency were used to correlate the equilibrium data. These models were evaluated based on the theoretical justifications of each isotherm parameter. The Sips model had the best fit for the adsorption of copper ions onto organo-bentonite. For the kinetic data, the pseudo-second order model was superior to the pseudo-first order model. Thermodynamically, the adsorption of copper ions occurs via chemisorption and the process is endothermic （△H^0〉0）, irreversible （△S^0〉0） and nonspontaneous （△G^0〉0）.

关键词： heavy metal copper adsorption organo-bentonite temperature dependent

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Exsolution of CoFe(Ru)nanoparticles in Ru-doped(La_(0.8)Sr_(0.2))_(0.9)Co_(0.1)Fe_(0.8)Ru_(0.1)O_(3−δ)for efficient oxygen evolution reaction

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Nano Research 2022年第8期15卷 6977-6986页

作者： Yi Liang Yu Cui Yang Chao Ning Han Jaka sunarso Ping Liang Xin He Chi Zhang Shaomin Liu School of Applied Physics and Materials Wuyi UniversityJiangmen 529020China Department of Materials Engineering KU LeuvenLeuven 3001Belgium Research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyJalan Simpang TigaKuching 93350SarawakMalaysia College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China

The rational modification of perovskite oxides(ABO3−δ)is essential to improve the efficiency and stability of oxygen *** engineering represents a facile approach to modify perovskites for enhanced *** compositional design and in situ exsolution,a Ru-doped(La_(0.8)Sr_(0.2))_(0.9)Co_(0.1)Fe_(0.8)Ru_(0.1)O_(3−δ)(LSCFR)perovskite anchored with CoFe(Ru)alloy particles on the surface was fabricated for oxygen evolution reaction(OER)in this *** results and calculations indicate that Ru-doping promotes the exsolution of CoFe(Ru)from the perovskite *** exsolution in the reduced atmosphere for 3 h,the catalyst(LSCFR-3)exhibited superior OER performance with an overpotential of 347 mV and a Tafel slope of 54.65 mV·dec^(−1),and showed good stability in contrast to the pristine *** exsolution of CoFe(Ru)particles,Ru doping,and the increase of surface oxygen vacancies are responsible for the enhancement of OER *** findings obtained in this study highlight the possibility of controlling exsolution and composition of nanoparticles by element doping and prove that in situ exsolution is an effective strategy for designing OER catalysts.

关键词： perovskite oxides in situ exsolution oxygen evolution reactions CoFe nanoparticles B-site cation doping

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Binary ionic liquid electrolyte design for ultrahigh-energy density graphene-based supercapacitors

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Materials Reports(Energy) 2022年第2期2卷 58-67页

作者： Shao Ing Wong Han Lin Tianyi Ma Jaka sunarso Basil T.Wong Baohua Jia Centre for Translational Atomaterials School of ScienceComputing and Engineering TechnologiesSwinburne University of TechnologyHawthornVictoria 3122Australia School of Science RMIT UniversityMelbourneVictoria 000Australia Research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyJalan Simpang Tiga93350 KuchingSarawakMalaysia

Although room temperature ionic liquids(ILs)have emerged as potential next-generation electrolytes for their wide electrochemical stability window(ESW),the trade-off between this window and viscosity has hindered their widespread use in energy storage ***,we present for the first time that such a trade-off can be balanced by mixing two ILs with the common anion([NTf_(2)]^(-))but different cations([EMIM]^(+) and[N1114]^(+))***[EMIM]cation-based IL possesses low viscosity while the[N1114]cation-based IL exhibits wide *** the concentrations of each IL in the mixtures can result in different electrolyte properties,we demonstrate a systematic approach by exploring the properties of various concentration *** addition,the corresponding cell voltage of their resulting graphene supercapacitors(SCs)accompanied based on the interaction between the binary ionic liquid and the electrodes,and the associated electrochemical performance were studied to determine the optimum electrolyte system for the highest SC energy *** well-balanced viscosity/ESW trade-off is achieved in binary IL consisting 50 vol%[EMIM][NTf_(2)]and 50 vol%[N1114][NTf_(2)]as evident from the extraordinary electrode specific capacitance of 293.1 F g^(-1) and the ultrahigh SC energy density of 177 Wh kg^(-1),which approaches that of a lithium-ion battery.

关键词： Electrolyte Binary ionic liquid Maximum working voltage High capacitance High energy density Supercapacitor

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A review on co-pyrolysis of agriculture biomass and disposable medical face mask waste for green fuel production:recent advances and thermo-kinetic models

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Frontiers of Chemical Science and Engineering 2023年第9期17卷 1141-1161页

作者： Melvin X.J.Wee Bridgid L.F.Chin Agus Saptoro Chung L.Yiin Jiuan J.Chew Jaka sunarso Suzana Yusup Abhishek Sharma Department of Chemical and Energy Engineering Faculty of Engineering and ScienceCurtin University MalaysiaCDT 250Miri 98009Malaysia Energy and Environment Research Cluster Faculty of Engineering and ScienceCurtin University MalaysiaCDT 250Miri 98009Malaysia Department of Chemical Engineering and Energy Sustainability Faculty of EngineeringUniversiti Malaysia Sarawak(UNIMAS)Kota Samarahan 94300Malaysia Institute of Sustainable and Renewable Energy(ISuRE) Universiti Malaysia Sarawak(UNIMAS)Kota Samarahan 94300Malaysia Research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyKuching 93350Malaysia Generation Unit(Fuel Technology&Combustion) Tenaga Nasional Berhad(TNB)Research Sdn BhdKajang 43000Malaysia Department of Chemical Engineering Manipal University JaipurJaipur 303007India Chemical&Environmental Engineering School of EngineeringRMIT UniversityMelbourneVictoria 3000Australia

The Association of Southeast Asian Nations is blessed with agricultural resources,and with the growing population,it will continue to prosper,which follows the abundance of agricultural *** biomass attracted researchers’interest in extracting bio-oil from these ***,the resulting bio-oil has low heating values and undesirable physical ***,co-pyrolysis with plastic or polymer wastes is adopted to improve the yield and quality of the ***,with the spread of the novel coronavirus,the surge of single-use plastic waste such as disposable medical face mask,can potentially set back the previous plastic waste reduction ***,studies of existing technologies and techniques are referred in exploring the potential of disposable medical face mask waste as a candidate for co-pyrolysis with *** parameters,utilisation of catalysts and technologies are key factors in improving and optimising the process to achieve commercial standard of liquid *** copyrolysis involves a series of complex mechanisms,which cannot be explained using simple iso-conversional ***,advanced conversional models are introduced,followed by the evolutionary models and predictive models,which can solve the non-linear catalytic copyrolysis reaction *** outlook and challenges for the topic are discussed in detail.

关键词： biomass COVID-19 wast catalyst pyrolysis kinetics

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Bio-oil production from pyrolysis of oil palm biomass and the upgrading technologies:A review

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Carbon Resources Conversion 2021年第1期4卷 239-250页

作者： Liza Melia Terry Claudia Li Jiuan Jing Chew Aqsha Aqsha Bing Shen How Adrian Chun Minh Loy Bridgid Lai Fui Chin Deni Shidqi Khaerudini Nishar Hameed Guoqing Guan Jaka sunarso Research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyJalan Simpang Tiga93350 KuchingSarawakMalaysia Department of Bioenergy Engineering and Chemurgy Faculty of Industrial TechnologyInstitut Teknologi BandungBandung 40132Jawa BaratIndonesia Department of Chemical Engineering Monash UniversityVictoria 3800Australia Department of Chemical and Energy Engineering Faculty of Engineering and ScienceCurtin University MalaysiaCDT 25098009 Miri SarawakMalaysia Research Centre for Physics National Research and Innovation Agency(BRIN)Gd.440-442 Kawasan Puspiptek SerpongSouth Tangerang15314 BantenIndonesia Faculty of Science Engineering and TechnologySwinburne University of TechnologyHawthornVictoria 3122Australia Energy Conversion Engineering Group Institute of Regional Innovation(IRI)Hirosaki University2-1-3MatsubaraAomori 030-0813Japan

Oil palm biomass(OPB)represents major portion of the lignocellulosic waste in Malaysia that can be converted into *** review aims to provide important insights in OPB-derived bio-oil production by first discussing the chemical compositions of different OPB and their effects to the bio-oil yield and quality obtained from pyrolysis process,followed by discussing the addition of plastics and catalysts into the pyrolysis for bio-oil upgrading,and lastly summarizing the existing technoeconomic and environmental studies and the potential use of process integration and intensification in this ***(PP),low density polyethylene(LDPE),and high density polyethylene(HDPE)have been commonly used in co-pyrolysis of OPB,which can effectively increase the heating value of bio-oil up to 80%that of ***,acidic,basic,and neutral catalysts have been applied to increase the amount of hydrocarbon and phenol in the bio-oil,further improving the heating value to be comparable to *** bio-oil production from OPB is currently still limited to demonstration scale despite the favorable environmental compatibility and technoeconomic feasibility shown by studies focused on empty fruit bunch(EFB).Several promising advanced pyrolysis processes that integrate other processes such as anaerobic digestion,hydrogen production process,and heat and power generation units as well as the advanced reactor designs are also overviewed here as future innovation of the bio-oil production from OPB,which may play more significant role as the technology matures.

关键词： Bio-oil production Co-pyrolysis Oil palm biomass Plastic waste Pyrolysis

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Synthesis of Biphasic Calcium Phosphate by Hydrothermal Route and Conversion to Porous Sintered Scaffold

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Journal of Biomaterials and Nanobiotechnology 2013年第3期4卷 273-278页

作者： sunarso Ahmad Fauzi Mohd Noor Shah Rizal Kasim Radzali Othman Ika Dewi Ana Kunio Ishikawa Department of Biomaterials Faculty of Dental Science Kyushu University Fukuoka Japan. Department of Biomedical Sciences and Technology Faculty of Dentistry Universitas Gadjah Mada Yogyakarta Indonesia School of Materials and Mineral Resources Engineering Universiti Sains Malaysia Penang Malaysia

Biphasic calcium phosphate (BCP) consisting of hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP) was successfully synthesized by new hydrothermal route using β-TCP as precursor. The X-ray diffraction analysis of as-synthesized powder indicated that β-TCP had been transformed into HA phase and amount of HA formed gradually increased with prolonged time. The results revealed that the recent technique may be able to control the composition of the obtained BCP which would influence the bioresorbability. Porous body of BCP was prepared by impregnation of polymeric sponge template with the slurry of the powder followed by sintering. The X-ray diffraction of porous product revealed that the composition of β-TCP increased after sintering indicating that HA had been decomposed. Porous BCP obtained from the recent technique possessed both macro and micropores structure which are useful for rapid tissue formation. Besides, the recent porous fabrication technique yielded porous BCP which preserved the sponge template morphology, enabling it to fabricate porous material with controlled pores structure.

关键词： Biphasic Calcium Phosphate β-TCP Hydroxyapatite Hydrothermal Porous

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