Article
Green & Sustainable Science & Technology
M. Salome Macedo, M. A. Soria, Luis M. Madeira
Summary: In recent years, glycerol steam reforming (GSR) has been a focus of interest for the production of green hydrogen, with researchers focusing on GSR thermodynamics, catalyst development, reaction kinetics and mechanisms, reactor models, and innovative reactor configurations.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Environmental
A. Capa, M. P. Gonzalez-Vazquez, D. Chen, F. Rubiera, C. Pevida, M. V. Gil
Summary: This study investigated the effect of H2S concentration in biogas on H2 production through the sorption enhanced steam reforming (SESR) process. The results showed that the catalyst activity was not affected at low H2S concentrations during the SESR cycles, but there was a slight decrease in catalyst activity at higher H2S concentrations. Sulfur was detected in both the catalyst and sorbent materials, with a higher proportion in the sorbent at higher H2S concentrations. H2 yield and purity decreased after the SESR cycles, especially at higher H2S concentrations.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Dan Zhou, Zhiyuan Li, Yaoqi Deng, Chengxiong Dang, Weiquan Cai
Summary: Sorption-enhanced biogas steam reforming with a Pb-modified Ni-CaO catalyst shows excellent stability and can continuously produce high-purity hydrogen.
Article
Chemistry, Physical
Surendar Moogi, Lingaiah Nakka, S. Sai Prasad Potharaju, Ashfaq Ahmed, Abid Farooq, Sang-Chul Jung, Gwang Hoon Rhee, Young-Kwon Park
Summary: Different cobalt-based mixed oxide catalysts were synthesized and tested for hydrogen production from glycerol steam reforming, with the 5Cu20CM catalyst showing the best performance attributed to its small particle size, high dispersion, and large surface area.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Sergio Iglesias-Vazquez, Jose Valecillos, Aingeru Remiro, Javier Bilbao, Ana Guadalupe Gayubo
Summary: The regeneration of NiAl2O4 spinel derived catalysts for ethanol steam reforming is challenging due to irreversible deactivation caused by Ni volatilization and catalyst particle fragmentation. The Al2O3 content in the catalyst influences the irreversible deactivation, which can be controlled by reducing the catalyst at 700-750 degrees C.
Article
Energy & Fuels
Shuliu Yang, Haoran Sun, Shiliang Yang, Jianhang Hu, Hua Wang
Summary: This study numerically investigates the sorption-enhanced glycerol steam reforming process using the multiphase particle-in-cell model within the Eulerian-Lagrangian framework. The particle-scale evaluations and gas thermal properties are comprehensively presented. The results reveal the preferential distribution of CaO particles in the bottom zone of the bed due to size and density-induced segregation. The findings have profound significance for understanding complex gas-solid reacting flow and optimizing the sorption-enhanced hydrogen production system.
Article
Chemistry, Physical
Naiara Garcia-Gomez, Jose Valecillos, Aingeru Remiro, Beatriz Valle, Javier Bilbao, Ana G. Gayubo
Summary: The study investigates the deactivation mechanism of a NiAl2O4 spinel derived catalyst in steam reforming of bio-oil, revealing the roles of Ni and alumina sites in this mechanism. It shows that under specific reaction conditions, high initial hydrogen yield can be achieved, but increasing temperature may lead to coke formation and rapid catalyst deactivation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
D. H. D. Rocha, T. A. Z. de Souza, C. J. R. Coronado, J. L. Silveira, R. J. Silva
Summary: The study found that by recycling the residual gas with high concentration of water and CO2, the glycerol reforming capacity can be maximized while increasing the system's overall exergy efficiency. This process was evaluated in three different scenarios regarding reform gas processing from technical and environmental perspectives.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Sha Li, Jiale Zhang, Bin Zhu, Wenju Wang
Summary: In this study, low-cost nickel catalysts supported on La, Ce, and Mg-promoted Al2O3 and ZrO2 were prepared and compared for hydrogen production from glycerol steam reforming. La-promoted Ni/Al2O3 catalyst exhibited the highest activity and stability, while Ce-promoted Ni/ZrO2 catalyst showed stable but lower carbon gasification efficiency due to the large Ni crystals over the bulk ZrO2 supports.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(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, Multidisciplinary
Yan Ding, Tian Zhang, Zhanzhi Ge, Peiwen Li, Yuesong Shen
Summary: This study prepared a series of recyclable NiO/NaF catalysts for methanol steam reforming to hydrogen, and comprehensively studied their performance. The experimental results showed that the NiO/NaF catalysts were able to efficiently convert methanol to hydrogen at high temperatures, with good stability and recyclability. In-depth characterization analysis revealed that the excellent performance of the NiO/NaF catalysts was attributed to their dense structure and the weakening of the Ni-O bonds.
COMPOSITES PART B-ENGINEERING
(2022)
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
Materials Science, Ceramics
Sang-Hun Lee, Young Jun Kwak, Jae-Woo Park, Ki-Tae Lee
Summary: In a reducing atmosphere, the NiAl2O4 spinel undergoes metal exsolution to form Ni nanoparticles and nonstoichiometric Ni1-xAl2O4-x without structural collapse. The Ni exsolution behavior is strongly influenced by the reduction conditions such as temperature and holding time. The exsolved Ni nanoparticles are well dispersed without agglomeration and exhibit better steam methane reforming performance compared to the commercial Ni/Al2O3 catalyst, due to the extended catalytic active site and suppression of agglomeration, as well as strong tolerance for carbon formation.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Kang Gao, Ommolbanin Alizadeh Sahraei, Maria C. Iliuta
Summary: The study found that the 7.5% Ni-FA4 catalyst achieved the best catalytic performance in glycerol steam reforming at 630 degrees Celsius, with high activity and stability attributed to the higher dispersion of Ni active sites and stronger interaction with the support.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Energy & Fuels
Jose Valecillos, Sergio Iglesias-Vazquez, Leire Landa, Aingeru Remiro, Javier Bilbao, Ana G. Gayubo
Summary: This study demonstrates the satisfactory performance of a Ni/Al2O3 catalyst derived from NiAl2O4 spinel in ethanol steam reforming. The reaction for H-2 formation in this system primarily occurs through two paired routes activated by metal and acid sites, limited by selective catalyst deactivation. At 500 degrees C, the main route involves ethanol dehydration on acid sites followed by ethylene decomposition on the Ni-Al2O3 interface, while at 600 degrees C, the gasification reaction of carbon species reduces the formation of carbon material.
Article
Chemistry, Physical
Jing Ma, Bo Jiang, Yuming Gao, Kewei Yu, Zheng Lv, Wang Si-ma, Dazhong Yuan, Dawei Tang
Summary: In this study, a high-efficiency electrified reactor based on a high-temperature heat pipe (HTPR) was proposed. The feasibility and performance of the HTPR were validated through experiments, and the reaction performance under different operating conditions was simulated. This research is of great significance for designing electrified reactors for endothermic reactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Mao Ning, Yu Hao, Zhuang Jiaojiao, Song Mengjie
Summary: This study investigated the influences of different supply air parameters on a personalized air conditioning system, and conducted numerical simulations. The results indicated that placing the supply air outlet at lower levels could improve the air change efficiency, but a higher supply air flow rate may cause draft risk.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Multidisciplinary Sciences
Libor Pekar, Mengjie Song, Subhransu Padhee, Petr Dostalek, Frantisek Zezulka
Summary: The focus of this contribution is to analyze the pole loci of a simple delayed model and apply it to parameter identification in a more complex heating-cooling process. The obtained results can provide accurate estimation of model parameters using dominant-pole-loci assignment and numerical optimization techniques.
SCIENTIFIC REPORTS
(2022)
Editorial Material
Energy & Fuels
Libor Pekar, Mengjie Song, Ning Mao, Hafiz Muhammad Ali, Wei Wu, Jie Cai
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Thermodynamics
Mengjie Song, Jiang Zhengyong, Dang Chaobin, Jiang Yuyan, Shen Jun, Luo Xiaoyan
Summary: Flow boiling heat transfer in microchannels is widely used to solve the heat dissipation problem of high heat flux devices. Experimental studies and mathematical modeling were conducted to optimize the heat transfer performance of rectangular radial microchannel heat exchangers with and without grooves. The results showed that heat exchangers with grooves had better heat transfer performance and adjusting structural parameters significantly influenced the heat transfer coefficient.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Green & Sustainable Science & Technology
Yingjie Xu, Songlin Huang, Jiafeng Wang, Mengjie Song, Jiaqi Yu, Xi Shen
Summary: Solar-driven refrigeration systems are useful for building cooling, but the assumption of unlimited and free solar heat is not always valid. This study proposes a new ejector-partially coupled enhanced compression refrigeration cycle that consumes less heat. Energy comparison and advanced exergy analysis are conducted to evaluate its performance. The results show that the new cycle achieves higher energy efficiency and lower annual cost compared to the traditional ejector-compressor cycle.
JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Qun Dang, Mengjie Song, Chaobin Dang, Tianzhuo Zhan, Long Zhang
Summary: Urine, as a test material in medical research, can reflect the health status of the body directly. This study experimentally investigated the solidification characteristics of urine droplets on a horizontal cold plate surface under natural convection, and compared them with water droplets. It was found that the solidification process of a urine droplet goes through four stages: supercooling, recalescence, freezing, and cooling. Additionally, the urine droplet changes color from transparent to blur white at the supercooling stage due to the precipitation of inorganic salts. The results of this study are expected to provide references for urinalysis of patients with metabolic diseases.
Article
Chemistry, Physical
Xue Xia, Wenxi Chang, Shuwen Cheng, Chuande Huang, Yue Hu, Weibin Xu, Li Zhang, Bo Jiang, Zhehao Sun, Yanyan Zhu, Xiaodong Wang
Summary: This study investigates the correlation between structural distortion and lattice oxygen activity in perovskite-type redox catalysts. The results show that reducing the octahedral tilting enhances the oxygen activity and promotes reactant activation and oxygen ion mobility.
Article
Energy & Fuels
Jing Ma, Bo Jiang, Wang Si-ma, Kewei Yu, Zheng Lv, Yuming Gao, Dazhong Yuan, Dawei Tang
Summary: This study investigates the energy conversion and transfer process of the high temperature heat pipe reactor (HTPR) driven by steam methane reforming. The HTPR demonstrates high thermal conductivity and solar-thermochemical efficiency, making it a promising system for producing high-quality hydrogen as aviation fuel.
Article
Energy & Fuels
Yichuan He, Chengzhi Hu, Bo Jiang, Zhehao Sun, Jing Ma, Hongyang Li, Dawei Tang
Summary: The transportation of hydrogen aviation fuel is sensitive to heat leakage, and this study proposes a data-driven machine-learning model to accurately predict the heat transfer coefficient of liquid hydrogen flow boiling, which demonstrates high precision.
Article
Chemistry, Physical
Shuwen Cheng, Yichuan He, Zheng Chang, Zhehao Sun, Xiaoliang Zhang, Dawei Tang, Gang Kevin Li, Ning Wang, Chen Shen, Bo Jiang
Summary: By using density functional theory calculations, the potential applications of XIS (X = Al, Ga, In) monolayer 2D materials in photocatalytic water splitting were explored, revealing their promising optical and electronic properties for water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Yingzong Liang, Jiacheng Xu, Chi Wai Hui, Xianglong Luo, Jianyong Chen, Zhi Yang, Ying Chen
Summary: A thermodynamically oriented method is developed to identify the theoretical and practical limits of pressure-retarded osmosis (PRO) on converting salinity gradient power to mechanical energy. Pinch analysis is used to find the mass exchange limit, and a graphical method is derived to determine the optimal pressure change. Additionally, a problem table method is presented for analyzing multi-stream PRO processes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Jiacheng Xu, Yingzong Liang, Xianglong Luo, Jianyong Chen, Zhi Yang, Ying Chen
Summary: Pressure-retarded osmosis is a promising technique for generating energy by recovering salinity gradient from high concentration effluents. This study proposes a novel method for optimizing the modules layout of a multi-stream PRO system, resulting in improved energy recovery efficiency.
Article
Thermodynamics
Yisheng Huang, Jianyong Chen, Ying Chen, Xianglong Luo, Yingzong Liang, Jiacheng He, Zhi Yang
Summary: A novel heat pump system (LEHP) is proposed, which can actively adjust the composition of working fluid to achieve separation and combination. Compared with traditional heat pumps, this system has better performance and can achieve higher performance coefficients under various operating conditions.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Song Mengjie, Lei Shangwen, S. H. Hosseini, Luo Xiaoyan, Wang Zhihua
Summary: This experimental study investigated the frosting characteristics on the surface of a horizontal cold plate. It was found that the first three stages of frosting were short and accounted for a small proportion of the overall process. The growth trend of frost thickness showed a leaf-shaped area, which could be used for predicting frost thickness under different conditions. Surface temperature had a significant effect on frosting rate and surface roughness. The periodic reverse melting directly influenced the thickness of the frost layer and dynamic frosting density.
APPLIED THERMAL ENGINEERING
(2022)