Review
Chemistry, Physical
Yuan Ren, Ya-Ya Ma, Wen-Long Mo, Jing Guo, Qing Liu, Xing Fan, Shu-Pei Zhang
Summary: As we all know, the emission of carbon dioxide is a major ecological and environmental issue. Therefore, it is urgent to treat and utilize the main greenhouse gases, CO2 and CH4. The dry methane reforming reaction (CRM/DRM) is of great significance for carbon emission reduction and the resource utilization of CO2-rich natural gas. However, the Ni-based catalysts used for this reaction are susceptible to carbon deposition, which hinders their industrial application.
Article
Materials Science, Ceramics
Toshihiko Osaki
Summary: Nickel-alumina cryogel and xerogel catalysts showed similar catalytic activity in CO2 reforming of CH4, but carbon formation was more effectively suppressed on the cryogel. Freeze drying improved the structural and textural properties of alumina gel, resulting in finer nickel particles dispersed throughout the gel.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Mu Liu, Xiaolei Bao, Fahao Ma, Minrui Wang, Liren Zheng, Zeyan Wang, Peng Wang, Yuanyuan Liu, Hefeng Cheng, Ying Dai, Yuchen Fan, Zhaoke Zheng, Baibiao Huang
Summary: The use of supercycle ALD technology has led to superior performance and stability for the TiO2@Cu system during CO2 reduction reaction, which was previously unattainable by traditional post-deposition TiO2 methods. This study has demonstrated a promising approach for enhancing the potential of ALD technique in the field of photocatalysis.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Baitang Jin, Shiguang Li, Xinhua Liang
Summary: The study deposited highly dispersed nickel nanoparticles on aluminum oxide using atomic layer deposition, and found that the addition of MgO increased the basicity of catalyst surfaces, assisting CO2 adsorption and activation. Although the formation of NiO-MgO solid solution did not improve overall reducibility, the interaction between reduced Ni nanoparticles and MgO inhibited sintering and provided sufficient metal-support interface for CO2 activation, leading to higher methane reforming rates.
Article
Chemistry, Applied
Ohhun Kwon, Renjing Huang, Tianyu Cao, John M. Vohs, Raymond J. Gorte
Summary: The study found that LaMnO3 films deposited on MgAl2O4 showed uniform coverage and maintained their structure intact after multiple redox cycles, with Ni also retaining good dispersion. The LaMnO3-supported catalyst exhibited higher activity and superior resistance against coke formation compared to Ni on unmodified MgAl2O4. The performance of Ni on LaMnO3 films was compared to previous results on other oxide films such as LaFeO3, CaTiO3, SrTiO3, and BaTiO3.
Article
Chemistry, Physical
Peng Qiu, Lei Wu, Kun Cheng, Shaowen Wu, Huiying Qi, Chunyan Xiong, Baofeng Tu
Summary: This study proposes a method to alleviate the coking issue of Ni-based anode-supporter in solid oxide fuel cells (SOFCs) through the use of a reforming layer. Ba0.9(Zr0.8Y0.2)1-xNixO3 (BZYNix) is used as the reforming layer material and exhibits excellent catalytic activity and coking-resistance. The utilization of the BZYNi0.2 reforming layer significantly improves the electrochemical performance and durability of the CH4-CO2 fueled single cell.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Silvera Scaccia, Livia Della Seta, Daniele Mirabile Gattia, Giuseppina Vanga
Summary: A novel Ni/CaO-Ca12Al14O33 catalyst was prepared by Ni wet impregnation on a mixed calcium-aluminum-oxide (CAO) support, which exhibited good stability and low carbon deposition during dry reforming of methane. In contrast to the reference catalyst Ni/gamma-Al2O3, the novel catalyst showed higher basicity and better performance in the reaction.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Engineering, Environmental
Mu Liu, Liren Zheng, Xiaolei Bao, Zeyan Wang, Peng Wang, Yuanyuan Liu, Hefeng Cheng, Ying Dai, Baibiao Huang, Zhaoke Zheng
Summary: The study demonstrates that ALD technique can be used to synthesize or modify catalysts, and Cu0/+ plays a key role in the photocatalytic CO2 reduction reaction.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Wen-Long Mo, Yuan Ren, Yaya Ma, Jing Guo, Zhi-Hui Feng, Shu-Pei Zhang, Xiao-Qin Yang
Summary: This study investigated the composition and structure characteristics of deposited carbon on four catalysts using various techniques. Filamentous carbon was found to be the main deposition type, which could block the catalyst pores and affect the catalytic performance. The carbon deposited on the catalyst prepared using the hydrothermal-precipitation method exhibited a high degree of graphitization, which was harmful to the catalyst stability. The decarburization temperature of the deposited carbon on the four catalysts was mainly in the range of 500-700 degrees C.
Article
Chemistry, Physical
Lingxiang Huang, Yue Ma, Mufan Niu, Shenyong Ren, Qiaoxia Guo, Chunming Xu, Baojian Shen
Summary: Dry reforming reaction of CH4 and CO2 over Ni-Fe bimetallic catalyst using C12A7-O2-in MCM-41 composite support was studied. Isotope tracing experiment revealed that CO mainly comes from 13CHx oxidation reaction and DH comes from CHx and D2O reaction, indicating the promotion of CHx oxidation by lattice oxygen and acceleration of methane conversion by water. XPS and TPSR-MS studies confirmed the presence of lattice oxygen in catalysts, which produced a small amount of H2O to facilitate a lower starting point. On-line MS investigation showed that trace water addition accelerated the adsorption of CO2 and promoted methane dissociation, with the oxidation reaction of CHx occurring after the dissociation of CO2. Additionally, TG analysis suggested that H2O could consume Cα on the catalyst during the reaction process to remove carbon deposition.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Chemistry, Multidisciplinary
Luqmanulhakim Baharudin, Norhasyimi Rahmat, Nur Hidayati Othman, Nilay Shah, Syed Shatir A. Syed-Hassan
Summary: This article reviews the deactivation mechanisms of Ni-based catalyst in dry reforming of methane (DRM) due to carbon deposition and other carbon-induced factors, and provides perspectives on controlling and mitigating these deactivation problems through manipulation of reaction conditions and process parameters, as well as the design and development of highly active coke-resistant Ni-based catalysts.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Physical
Yong-Hua Zhao, Jin-Tao Geng, Han-Dong Zhu, Qi-Jian Zhang, Huan Wang, Xiao-Qian Feng
Summary: Ordered mesoporous Ni-xMg-Al2O3 catalysts were synthesized by an improved one-pot evaporation-induced self-assembly method to overcome the issues of sintering and carbon accumulation in the CO2 reforming of CH4. The introduction of Mg maintained the ordered mesoporous structure, enhanced the interaction between Ni and Al2O3, and reduced the number of acid sites. The Ni-3Mg-Al2O3 catalyst exhibited the highest catalytic activity and stability, achieving CH4 and CO2 conversions of 81.97% and 89.11%, respectively, without deactivation for 20 hours. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Zhanlong Song, Jianheng Zhang, Kezhen Chen, Xiqiang Zhao, Jing Sun, Yanpeng Mao, Xujiang Wang, Wenlong Wang, Shouyan Chen
Summary: This paper investigates the effect of adding a high-voltage electric field to the reforming system with NiFe catalyst supported on active carbon. The results show that increasing the electric field strength can significantly enhance the conversion rate of the reforming reaction, and the NiFe/AC catalyst achieves the best catalytic effect at 10% component loading.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Physical
Lin Zhang, Ying Yang, Zhiwei Yao, Shi Yan, Xiaoxue Kang
Summary: The oxidation-recarburization cycle is an important reaction mechanism in various Ni/Mo2C catalyzed reactions, where Mo2C undergoes structure transformation and Ni phase remains unchanged. A new cycle route involving Ni, Ni/Mo2C <-> MoNi4, has been discovered to impact the reaction proceeding significantly, with the formation rate of MoNi4 influencing the catalytic cycle speed.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Rui Zhao, Xudong Du, Kun Cao, Miao Gong, Yicheng Li, Jianping Ai, Rongli Ye, Rong Chen, Bin Shan
Summary: This study utilized atomic layer deposition (ALD) to uniformly disperse Fe nanoparticles on Ni/Al2O3 catalysts, solving the deposition of carbon on active sites during long-term DRM tests. The addition of trace amounts of Fe (0.3-0.6%) facilitated CH4 dissociation on Ni0, improved low-temperature catalytic activity, moderated carbon species, and accelerated coke oxidation. The catalyst with 0.3% Fe content exhibited almost no activity loss in the 72-hour test at 650℃.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)