Article
Chemistry, Applied
Di Zhang, Xin-Mei Liu, Yu-Xiang Liu, Zi-Feng Yan
Summary: The pore structure significantly influences the performance of Ni-Mo/γ-Al2O3 catalyst and the desulfurization pathway of 4,6-dimethyldibenzothiophene. By adjusting the pore size, the reducibility of Mo species and the Ni-Mo-S structure can be modified, resulting in different reaction pathways and efficiencies. The design of deep desulfurization catalysts for environmental protection can be optimized based on these findings.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Teddy Roy, Julie Rousseau, Antoine Daudin, Gerhard Pirngruber, Benedicte Lebeau, Jean-Luc Blin, Sylvette Brunet
Summary: Mesostructured titania as a support for the CoMoS active phase enhances HDS activity and DDS selectivity, with temperature treatment significantly affecting catalyst activity. Higher activities are obtained after treatment at 380 degrees C, correlating with higher specific surface area and a semicrystalline anatase framework in the mesostructured TiO2 material.
Article
Chemistry, Multidisciplinary
Xiantao Niu, Weixia Zhou, Yuanyuan Han, Yongjun Liu
Summary: In this study, CoMoS catalysts with controllable morphology were prepared using a single-source hydrothermal method. The coordination between the metal atom and DDTC was found to effectively control the crystal growth of MoS2 and promote the formation of the active phase. Catalysts with fewer stacking layers of MoS2 slabs showed increased conversion efficiency for HDS activity.
Article
Chemistry, Physical
Ke Yu, Weimin Kong, Zhen Zhao, Aijun Duan, Lian Kong, Xilong Wang
Summary: Mesoporous yolk-shell silica spheres with different shell thicknesses and yolk sizes were synthesized and used as catalyst supports for hydrodesulfurization reactions. The results showed that the shell thickness and yolk size significantly affect the catalytic activity, with the NiMo/Al-Y30S13 catalyst exhibiting the highest activity. Additionally, the mechanisms of DBT and 4,6-DMDBT HDS over NiMo/Al-YxSy materials were proposed.
JOURNAL OF CATALYSIS
(2022)
Article
Energy & Fuels
Enlai Wang, Qinghong Li, Mingyu Song, Fuhui Yang, Yonghang Chen, Guangjian Wang, Liancheng Bing, Qinqin Zhang, Fang Wang, Dezhi Han
Summary: The melamine foam was used as a support to fabricate the CoxMo/MF supported HDS catalysts with three-dimensional porous structure. The obtained catalysts showed the 3DP structure with metal oxides attached to the MF framework. The Co2.0Mo/MF catalyst exhibited high thiophene conversion due to its unique 3DP structure with rich meso-/macropores and low average stacking of crystalline MoS2.
Article
Engineering, Environmental
Chengkun Xiao, Shaotong Song, Yutong Zou, Enhua Wang, Aocheng Wang, Yidong Song, Jian Liu, Aijun Duan, Peng Zheng, Xilong Wang
Summary: Low-cost pure aluminum-based Al-TUD-1 mesoporous materials were successfully synthesized and modified with Citric acid to form NiMo/AT catalysts for DBT and 4,6-DMDBT HDS reactions. The NiMoCA(2)/AT catalyst showed superior performance with improved HDS activity and selectivity, achieving maximal efficiency and TOF values at WHSV of 10 h-1.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Jin-Lin Mei, Yu Shi, Cheng-Kun Xiao, Ao-Cheng Wang, Ai-Jun Duan, Xi-Long Wang
Summary: Hierarchically porous Beta/SBA-16 (BS) composite materials were synthesized through a two-step in-situ assembly hydrothermal crystallization method, and NiMo catalysts supported on BS with different silica-alumina ratios were prepared. The catalysts exhibited high hydrodesulfurization activity due to the synergistic effects of various factors.
Article
Chemistry, Applied
Hao Zhang, Guang-Ren Qian, Hong Liu
Summary: Alumina composites containing ZSM-5 were developed, and two series of catalysts were prepared for HDS, showing that NiMoS/xMZA catalysts exhibit higher activity and different selectivity compared to NiMoS/xZA catalysts. This suggests that micropores and mesopores in the composites have an impact on HDS activity and selectivity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Pengfei Zhang, Fujun Mu, Yasong Zhou, Qiang Wei, Xiaodong Liu, Qingxiang You, Yacheng Shan, Wuwen Zhou
Summary: Highly ordered mesoporous TiO2-Al2O3 composite oxides were synthesized via a facile evaporation-induced self-assembly (EISA) method, exhibiting high specific surface area, thermal stability, and narrow pore size distributions. The incorporation of TiO2 effectively weakened the support-metal interactions and promoted the formation of more Type II Ni-Mo-S active phases, which greatly enhanced the hydrodesulfurization catalytic performance. The NiMo/TA-0.4 catalyst showed the highest catalytic activity due to its suitable textural properties, thermal stability, and moderate metal-support interactions.
Article
Chemistry, Physical
Guan Huang, Zhichao Sun, Zhiquan Yu, Ying-Ya Liu, Yao Wang, Wei Wang, Anjie Wang, Yongkang Hu
Summary: Highly dispersed Ni2P catalysts were prepared from nickel phyllosilicate precursor by the deposition-precipitation method. Si-containing materials were used as supports, and the strong interaction between Ni and Si species effectively prevented aggregation. The resulting Ni2P catalyst showed higher hydrogenation activity due to the strong metal-support interaction, smaller particle size, and higher degree of coordinately unsaturated sites.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Applied
J. Arturo Mendoza-Nieto, Alfredo Vizueth-Montes de Oca, Lina A. Calzada, Tatiana E. Klimova
Summary: In this study, different SBA-15 supports with varying compositions were used to prepare trimetallic CoMoW and NiMoW catalysts for deep hydrodesulfurization reactions. The addition of titania and zirconia to the supports resulted in higher catalytic activity, particularly for the Ni-promoted samples. Among these catalysts, NiMoW/Zr-SBA-15 showed the highest activity for sulfur removal, with twice the activity compared to NiMoW/SBA-15 analog. The dispersion of metal species on the sulfided NiMoW/Zr-SBA-15 sample was identified as the key factor contributing to its superior activity. Additionally, catalyst selectivity was found to be more dependent on the promoter used rather than the support's chemical composition.
Article
Engineering, Chemical
Julio Cesar Garcia-Martinez, Gerardo Chavez-Esquivel, Jose Antonio Colin-Luna, Jose Antonio de los Reyes-heredia
Summary: This work studied the influence of pressure and temperature on reactive distillation (RD) under lower conditions than conventional hydrotreating (HDT) processes, as well as the hydrodesulfurization (HDS) reaction of 4,6-dimethyldibenzothiophene (4,6-DMDBT) molecule and the experimental performance of a down-flow micro trickle bed reactor (micro-TBR) with n-dodecane and decalin. The results showed that using n-dodecane as a solvent resulted in higher conversion rates compared to using decalin, which was due to the higher liquid hydrogen fraction in n-dodecane.
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2023)
Article
Chemistry, Physical
Peter J. Topalian, Bo A. Carrillo, Paul M. Cochran, Michael F. Takemura, Mark E. Bussell
Summary: A series of Ni2-xRuxP/SiO2 catalysts were prepared spanning the full composition space, with Ru playing a key role in lowering the precursor reduction temperature and increasing the P content in the supported Ni2-xRuxP phase. Catalysts with higher Ru content exhibited significantly enhanced HDS activity and selectivity.
JOURNAL OF CATALYSIS
(2021)
Article
Energy & Fuels
Pojawan Aiamsiri, Dusadee Tumnantong, Boonyawan Yoosuk, Chawalit Ngamcharussrivichai, Pattarapan Prasassarakich
Summary: This research investigated the performance of unsupported and γ-Al2O3 supported Ni-Mo catalysts for palm oil deoxygenation to biohydrogenated diesel. It was found that the hydrothermal method for preparing 0.2-NiMoS2 catalyst was efficient, while the H-NiMoS2/γ-Al2O3-0.2 catalyst prepared using a one-step hydrothermal method showed good HDO activity. Both catalysts could be reused for at least three cycles while maintaining good performance.
Article
Chemistry, Applied
Ivan Shamanaev, Anna O. Suvorova, Evgeny Yu Gerasimov, Vera P. Pakharukova, Maxim A. Panafidin, Ilya Yakovlev, Galina A. Bukhtiyarova
Summary: Ni-phosphides are a promising alternative to conventional NiMo sulfides for hydrotreatment, but their activity is lower compared to NiMo/Al2O3 catalysts and can be negatively affected under certain conditions.
Article
Materials Science, Multidisciplinary
Sijia Liu, Xin Zhang, Jie Zhang, Zhigang Lei, Xin Liang, Biaohua Chen
SCIENCE CHINA-MATERIALS
(2016)
Article
Chemistry, Physical
Xin Liang, Zhibo Ren, Xiaolin Zhu, Qinwei Zhang, Donghai Mei, Biaohua Chen
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Physical
Xin Liang, Ning Liu, Huiyun Qiu, Cong Zhang, Donghai Mei, Biaohua Chen
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Cong Zhang, Sijia Liu, Zhongzhang Mao, Xin Liang, Biaohua Chen
JOURNAL OF MATERIALS CHEMISTRY A
(2017)
Article
Energy & Fuels
Sijia Liu, Qiu Jin, Yuan Xu, Xiangchen Fang, Ning Liu, Jie Zhang, Xin Liang, Biaohua Chen
Article
Chemistry, Applied
Ye Gou, Xin Liang, Biaohua Chen
Article
Chemistry, Multidisciplinary
Yeheng He, Xin Liang, Biaohua Chen
CHEMICAL COMMUNICATIONS
(2013)
Article
Chemistry, Physical
Ye Gou, Xin Liang, Biaohua Chen
JOURNAL OF ALLOYS AND COMPOUNDS
(2013)
Article
Materials Science, Multidisciplinary
Xin Liang, Junjia Xiao, Ye Gou, Biaohua Chen
JOURNAL OF MATERIALS RESEARCH
(2011)
Article
Materials Science, Multidisciplinary
Xin Liang, Simin Kuang, Yadong Li
JOURNAL OF MATERIALS RESEARCH
(2011)
Article
Chemistry, Multidisciplinary
Biaohua Chen, Jianfei Yu, Xin Liang
Article
Chemistry, Physical
Yeheng He, Xin Liang, Biaohua Chen
Article
Chemistry, Physical
Yeheng He, Sanya Du, Jianwei Li, Runduo Zhang, Xin Liang, Biaohua Chen
Article
Nanoscience & Nanotechnology
Xin Liang, Bingxia Zheng, Ligang Chen, Juntao Zhang, Zhongbin Zhuang, Biaohua Chen
ACS APPLIED MATERIALS & INTERFACES
(2017)
Article
Chemistry, Physical
Zi-Ye Liu, Qian-Yu Wang, Ji-Ming Hu
Summary: In this study, a layered carbon dot composite catalyst (NiFe LDH@CDs) was prepared using a one-step coprecipitation method, without the need for heating or hydrothermal treatment. The CD-functionalized catalyst facilitated rapid charge transfer and accelerated the oxygen evolution reaction. Additionally, the heterojunction structure formed between NiFe LDH and CDs efficiently suppressed photoelectron-hole recombination.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Rohit Kumar, Ankit Kumar Srivastava, Palaniyappan Nagarasu, Vedichi Madhu, Ekambaram Balaraman
Summary: We designed and synthesized a NN-CoII bidentate complex and used it for the amination of alcohols under mild and solventless conditions. The complex exhibited good reactivity towards both primary and sterically hindered secondary alcohols, providing high yields of amines. The pyrazole moiety in the ligand played a crucial role in the reaction. Furthermore, we demonstrated the reusability of the complex as a homogeneous cobalt catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Yong Tang, Jianhao Qiu, Dingliang Dai, Guanglu Xia, Lu Zhang, Jianfeng Yao
Summary: Defect engineering has been shown to improve the photocatalytic performance. This study investigated the use of defect-rich UiO-66-NH2 wrapped by ZnIn2S4 as a catalyst for photocatalytic H2O2 production. The defects in UiO-66-NH2 enhanced O-2 adsorption and charge separation, leading to higher H2O2 yield. The insights from this work can advance the research in defect engineering of MOFs and photocatalytic H2O2 synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Ruiyang Qu, Shuxin Mao, Jana Weiss, Vita A. Kondratenko, Evgenii V. Kondratenko, Stephan Bartling, Haifeng Qi, Annette-Enrica Surkus, Kathrin Junge, Matthias Beller
Summary: The hydrogenation of amides, a challenging reaction usually performed at high temperatures, has been achieved under milder conditions using a new Pt-MoOx/TiO2 catalyst. This catalyst system enables the selective hydrogenation of various amides and imides.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Xiaoran Niu, Ao Wang, Lei Tong, Lei Wang, Yuan Kong, Chenliang Su, Hai-Wei Liang
Summary: This study introduces a novel intermetallic PdCu3 catalyst supported on defective nanodiamond-graphene (ND@G), which exhibits high selectivity (95%) and remarkable activity (turnover frequency: 2940 h(-1)), six times higher than that of the commercial Lindlar catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Review
Chemistry, Physical
Zhiyuan Zheng, Yiming Yue, Hongying Zhuo, Qinggang Liu, Yanqiang Huang
Summary: This review presents the recent research advances on single-atom catalysis for deep reduction of CO2. Detailed introductions and summaries were classified into three categories based on proton-coupled multi-electron transfer approaches: strengthening metal-support interaction, rational design and regulation of coordination environment, and development of SACs with multi-atom active sites. The challenges and future research directions in the field of SACs for CO2 reduction are also proposed.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shiv Kumar, Paramita Datta, Anup Bhunia, Swadhin K. Mandal
Summary: This article reports a transition-metal-free process for in situ denitrogenation of tosylhydrazones, resulting in the production of various sulfones. The authors used a phenalenyl-based odd alternant hydrocarbon as a photoredox catalyst, which acted as a potent oxidant to facilitate the denitrogenation reaction. The method showed wide functional-group tolerance and high yields, making it suitable for late-stage modification of natural products.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
L. A. Luque-Alvarez, J. Gonzalez-Arias, F. Romero-Sarria, T. R. Reina, L. F. Bobadilla, J. A. Odriozola
Summary: Currently, the production of acetic acid through the carbonylation reaction of methanol has limitations, leading to the exploration of alternative methods using heterogeneous catalysts. This study investigates the methanol carbonylation reaction over a Cu-H-MOR catalyst and proposes a reaction mechanism based on the catalytic behavior and performance of the catalyst. The results provide insights into the reaction mechanism and the involvement of acid and redox centers.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)