Article
Engineering, Environmental
M. Mateen Shahid, Syed Zaheer Abbas, Fahad Maqbool, Sergio Ramirez-Solis, Valerie Dupont, Tariq Mahmud
Summary: The study investigated the impact of three different types of sorbents on sorption-enhanced steam methane reforming (SE-SMR) process and found the optimum operating conditions. CaO sorbent showed the best performance at 900K and 3 bar, with 82% CH4 conversion and 85% H-2 purity; LZC and HTC sorbents performed well at 773K and 5 bar.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Binlin Dou, Kai Wu, Hua Zhang, Bingbing Chen, Haisheng Chen, Yujie Xu
Summary: In this study, a sorption-enhanced chemical looping steam reforming process for glycerol was proposed to achieve simultaneous CO2 capture and conversion, resulting in the generation of high purity hydrogen and syngas. The results demonstrated that the use of appropriate catalysts and sorbents can effectively generate hydrogen and reduce CO2 emissions in an integrated process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yongqing Xu, Bowen Lu, Cong Luo, Jian Chen, Zewu Zhang, Liqi Zhang
Summary: The study successfully improved the quality of H-2 gas produced during the sorption enhanced steam reforming (SESRE) process of ethanol by coupling novel CaO-based porous spherical sorbents with conventional Ni/Al2O3 catalyst. The results showed that the sorption enhanced steam reforming process is an effective and flexible way to produce high-quality H-2 around 600 degrees C, and the simulated sorption enhanced process was experimentally validated.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Physical
Yinxiang Wang, Muhammad Zaki Memon, Majid Ali Seelro, Weng Fu, Yuan Gao, Yingchao Dong, Guozhao Ji
Summary: This paper briefly discusses the advantages and disadvantages of different types of CO2 sorbents, focusing on how to improve their adsorption performance. Selecting the appropriate sorbent is crucial for producing high-purity hydrogen gas.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Hyunjun Lee, Boreum Lee, Manhee Byun, Hankwon Lim
Summary: This study evaluated the thermodynamic and economic aspects of a sorption-enhanced membrane reactor (SEMR) for next-generation hydrogen (H-2) production and CO2 capture, showing SEMR to be a beneficial method with lower production costs compared to conventional packed-bed reactors and membrane reactors.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Review
Energy & Fuels
Chinonyelum Udemu, Carolina Font-Palma
Summary: Sorption-enhanced steam reforming (SE-SR) offers lower capital costs and compact makeup, but its technology readiness level (TRL) is currently low. Increasing activities in reactor modelling and validation at pilot scale can expedite large-scale deployment of SE-SR technology. The Eulerian-Eulerian two-fluid model is commonly used for modelling SE-SR, but it oversimplifies the particle system and may have large errors for CO2 gas output. Limitations and future perspectives for reactor designs and various modelling approaches are discussed.
Article
Engineering, Environmental
Nguyen Dat Vo, Jun-Ho Kang, Min Oh, Chang-Ha Lee
Summary: An integrated sorption-enhanced steam methane reforming (SESMR) process has been developed for simultaneous blue H-2 production and CO2 capture on a semi-central scale. The process has high energy efficiency and reduced production costs, with temperature being a key factor influencing performance. The developed cyclic fluidized-bed (CFB) model is not only applicable to the SESMR process but also to other related processes.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Fabio Fatigati, Andrea Di Giuliano, Roberto Carapellucci, Katia Gallucci, Roberto Cipollone
Summary: The production of blue hydrogen through sorption-enhanced processes, such as SESMR, offers efficient hydrogen production with substantial energy self-sufficiency, representing a 10% improvement in energy efficiency compared to traditional SMR processes.
Article
Energy & Fuels
Feifei Wang, Yingjie Li, Yuzhuo Wang, Chunxiao Zhang, Leizhe Chu, Liguo Yang, Xiaoxu Fan
Summary: This study investigates the promotion mechanism of Ni-CaO in the SESMR reaction through density functional theory (DFT) calculations. The results show that the Ni-CaO catalyst can lower the reaction energy barrier and facilitate the SESMR reaction.
Article
Engineering, Chemical
Musaddique Mahfuz Ahmed, Rajesh Kumar Upadhyay, Pankaj Tiwari
Summary: In this study, a techno-economic comparison of CISR and SE-CLSR models was conducted using Aspen Plus V11 to assess the economic viability of hydrogen generation by MSR process. Simulations were performed to observe a strong dependence of methanol conversion, hydrogen yield, CO selectivity on different operating conditions. Sensitivity analysis was performed to obtain the optimum operating conditions. The estimated hydrogen production costs were 2.66 $/kg and 2.79 $/kg for CISR and SE-CLSR processes, respectively.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Alma Capa, Yongliang Yan, Fernando Rubiera, Covadonga Pevida, Maria Victoria Gil, Peter T. Clough
Summary: Renewable clean H2 has great potential for decarbonizing energy systems. The sorption enhanced steam reforming (SESR) process combines steam reforming with CO2 removal using a solid sorbent, enhancing H2 production. This study explores different process configurations for integrating biogas with SESR for high-purity renewable H2 production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Dyovani Bruno Lima Santos, Ana Caroline Pereira Oliveira, Carla Eponina Hori
Summary: The study investigated the effect of adding sodium to a CaO sorbent in SE-SMR process. It was found that while sodium addition decreased the duration of pre-breakthrough, it also increased sintering effect. XRD, SEM, and TGA results showed an inverse relationship between particle diameter and CO2 capture performance.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Multidisciplinary
Vineet Singh Sikarwar, Nageswara Rao Peela, Arun Krishna Vuppaladadiyam, Newton Libanio Ferreira, Alan Maslani, Ritik Tomar, Erik Meers, Michal Jeremias, Michael Pohorely
Summary: This study evaluates the feasibility of different sorbents in producing hydrogen-rich syngas through plasma-assisted CO2-sorption enhanced gasification. The results show that the highest hydrogen yield is achieved at 550 degrees C for CaO (79 vol%), 500 degrees C for MgO (29 vol%), and 700 degrees C for Li4SiO4 (55 vol%). The optimal SOR/F ratios are 1.5 for CaO, 1.0 for MgO, and 2.5 for Li4SiO4. The findings suggest that plasma-assisted CO2-sorption enhanced gasification can be an effective pathway for producing clean energy and achieving carbon neutrality.
Article
Chemistry, Physical
Kunlanan Wiranarongkorn, Yaneeporn Patcharavorachot, Joongjai Panpranot, Suttichai Assabumrungrat, Amornchai Arpornwichanop
Summary: Solid oxide fuel cells (SOFCs) are efficient and environmentally friendly technology for electricity and heat generation, with bio-oil as a renewable feedstock. The study shows that the SESR-SOFC system is more advantageous than conventional SOFC systems, but still economically infeasible.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Chien-Hung Chen, Ching-Tsung Yu, Wen-Hui Chen
Summary: Optimization of steam methane reforming reaction through CO2 sorption enhancement resulted in high-purity hydrogen production suitable for proton-exchange membrane fuel cells, demonstrating significant differences in CH4 conversion between SMR and SESMR.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Qingjun Chen, Siyu Wang, Kumar R. Rout, De Chen
Summary: A novel low-concentration CO2 capture material (PEI/MCS) has been developed, showing high CO2 capture capacity, excellent regenerability, and stability. By adjusting the pore structure and PEI loading, the CO2 capture performance can be optimized.
Article
Chemistry, Applied
Hongfei Ma, Endre Fenes, Yanying Qi, Yalan Wang, Kumar R. Rout, Terje Fuglerud, De Chen
Summary: A comprehensive kinetic study was conducted on CuCl2/gamma-Al2O3-based catalysts to investigate the co-promoter effect in ethylene oxychlorination. The promoter effects were found to influence the Cu2+ reduction or Cu+ oxidation in the catalytic cycle. K-doped catalyst greatly increased the oxidation step rate, while Mg-doped catalyst enhanced the reduction step rate. Co-doped K and Mg catalyst showed intermediate effects on both reaction rate and Cu oxidation state. Steady-state reactions closely matched the rates predicted by the rate-diagram.
Article
Engineering, Chemical
Hao Yan, Shuang Yao, Siming Zhao, Mengyuan Liu, Wenxiang Zhang, Xin Zhou, Guangyu Zhang, Xin Jin, Yibin Liu, Xiang Feng, Xiaobo Chen, De Chen, Chaohe Yang
Summary: This study demonstrated that alkaline earth metal oxides can enhance the electronic transfer ability, modify the reduction properties of Pt, and create abundant surface oxygen vacancies in Pt/M-MCM-41 catalysts. Additionally, the addition of alkaline earth metal oxides like CaO can promote the activation of primary hydroxyl groups and C-H bonds, leading to excellent catalytic performance. The Pt/Ca-MCM-41 (70) catalyst shows record high turnover frequency values for the oxidation of glucose and xylose to carboxylic acids.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Computer Science, Interdisciplinary Applications
Xin Zhou, Mingyue Zhao, Nan Sheng, Lei Tang, Xiang Feng, Hui Zhao, Yibin Liu, Xiaobo Chen, Hao Yan, Chaohe Yang
Summary: The research on the efficient conversion of PAHs in naphthenic-based heavy oil to produce light olefins and aromatics has attracted significant attention. Through systematic process integration, optimization of operational parameters, and economic and life cycle environmental assessments, the DHTMP process demonstrates comprehensive advantages for full recovery and utilization of low-value light cycle oil.
COMPUTERS & CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Wenyao Chen, Jingnan Wang, Yanfang Zhang, Jing Zhang, Xuezhi Duan, Rui Si, De Chen, Gang Qian, Xinggui Zhou
Summary: In this study, a kinetics and mechanistic strategy was used to investigate the significantly improved activity and selectivity of Pt-catalyzed glycerol oxidation. The activity enhancement was found to mainly result from changes in the quantity of Pt active sites. Additionally, the atomic structure of the PtSb catalyst was shown to play a crucial role in activating active sites for hydroxyl activation.
Article
Chemistry, Physical
Xiaoli Yang, Jia Yang, Yalan Wang, Tao Zhao, Haoxi Ben, Xuning Li, Anders Holmen, Yanqiang Huang, De Chen
Summary: The Na and S-modulated FeMnOx catalysts play a crucial role in enhancing CO conversion, promoting olefin formation, and suppressing methane generation in Fischer-Tropsch synthesis of light olefins. Multiple characterizations and kinetic analysis confirmed that the promoters increase the formation of active species and lower CO activation energy. The study provides a practical strategy for developing highly active and stable FTO catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Chen Chen, Yongxiao Tuo, Qing Lu, Han Lu, Shengyang Zhang, Yan Zhou, Jun Zhang, Zhanning Liu, Zixi Kang, Xiang Feng, De Chen
Summary: The study successfully synthesized a hierarchically structured Co-Ni-Fe spinet oxide-carbonitrides hybrid electrocatalyst with excellent OER performance through a unique ion-exchange strategy. This method may serve as a versatile platform for rational design and synthesis of multi-metallic MOF derived electrocatalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Jonas Van Belleghem, Jia Yang, Pieter Janssens, Jeroen Poissonnier, De Chen, Guy B. Marin, Joris W. Thybaut
Summary: An extended Single-Event MicroKinetic (SEMK) model successfully simulated Steady State Isotopic Transient Kinetic Analysis (SSITKA) data for Co catalyzed Fischer-Tropsch Synthesis (FTS), providing meaningful estimates for activation energies and atomic chemisorption enthalpies. The model analysis revealed the nature of two site types and the reaction preference for CO on step sites, as well as the role of terrace sites in methane production and alkane hydrogenation. The metal particle size effect was attributed to the increasing importance of terrace sites on reaction kinetics.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Jie Yang, Erlend Bjorgum, Hui Chang, Ka-Ke Zhu, Zhi-Jun Sui, Xing-Gui Zhou, Anders Holmen, Yi-An Zhu, De Chen
Summary: Research has shown that the dynamic nature of active sites on La-Fe-based perovskites in chemical looping methane oxidation is influenced by the Fe coordination environment (and hence the oxygen vacancy concentration), which is the key parameter governing the catalyst selectivity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Yao Nian, Yan Wang, Akash N. Biswas, Xiaobo Chen, You Han, Jingguang G. Chen
Summary: Transition metal carbides (TMCs) and nitrides (TMNs) of Group VB elements were used as supports to tune the CO2RR activity and CO/H-2 ratios over Ag- and Au-based electrocatalysts. TaC and TaN were identified as promising supports for Ag- and Au-based electrocatalysts for CO2RR towards synthesis gas production.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Xin Zhou, Shangfeng Li, Yuan Wang, Jiewenjing Zhang, Zhibo Zhang, Changgui Wu, Xiaobo Chen, Xiang Feng, Yibin Liu, Hui Zhao, Hao Yan, Chaohe Yang
Summary: The study introduced a novel hierarchical catalytic cracking process for crude oil, leading to increased conversion rate and olefin yields. Optimization of key operating parameters improved hydrogen and carbon atoms efficiency, net present value, and internal rate of return. Additionally, the novel process reduced greenhouse gas emissions, wastewater generation, and non-renewable energy consumption compared to conventional processes.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
Xiukuang Zhang, Jie Yin, Qian Lei, Xiangpeng Meng, Xiaobo Chen, Zhou Li
Summary: The study showed that high-throughput fabrication using directed energy deposition allowed for rapid production of gradient Cu-Fe-Cr alloys, with liquid diffusion and decomposition precipitation contributing to gradient variation in microstructure and composition, leading to increased hardness. Machine learning was successfully employed to predict alloy hardness, aiding in the acceleration of alloy design and fabrication.
Article
Optics
Xiao Yang, Xiaobo Chen, Juntong Xi
Summary: This work presents an efficient initial value estimation method for speckle control points matching using digital image correlation (DIC) based on perspective transformation. The proposed method achieves higher calibration accuracy compared to regular planar chessboard or circular marker array calibration targets, as well as higher measurement precision compared to the speckle pattern calibration method that uses SIFT-based initial value estimation.
Article
Chemistry, Physical
Qing Lu, Chen Chen, Qian Di, Wanli Liu, Xiaohui Sun, Yongxiao Tuo, Yan Zhou, Yuan Pan, Xiang Feng, Lina Li, De Chen, Jun Zhang
Summary: Efficient and stable electrocatalysts are crucial for the electrocatalytic CO2 reduction reaction (CO2RR) into chemical products. In this study, a NC@Ni/C nano-composite with a core-shell structure was developed as an effective electrocatalyst for CO2RR to CO over a wide potential range. The catalyst exhibited high CO Faradaic efficiency and excellent stability, primarily attributed to the pyridinic-N doping in the carbon shell of Ni NPs.
Article
Environmental Sciences
Fabricio Motteran, Maria Bernadete Amancio Varesche, Pablo A. Lara-Martin
Summary: This study investigated the degradation of xenobiotic compounds under aerobic and anaerobic conditions. The results showed that the degradation rate of surfactants was faster under aerobic conditions and could be removed by different inoculums, while no degradation was observed under anaerobic conditions. Ethanol was found to facilitate the degradation of surfactants in anaerobic environments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.