Article
Chemistry, Physical
Jiahui Huang, Junhong Fu, Jiarui Zhao, Jian Wang, Kaixin Tang, Qi Liu
Summary: The Pd/TiO2 catalysts with different Pd nanoparticle sizes were used to study the selectivity control of hydrogenation of 3-nitrostyrene (3-NS). It was found that decreasing particle size increased the selectivity of 3-vinylanilline (3-VA) and decreased the selectivity of 3-ethylnitrobenzene (3-EN). However, for Pd/SiO2 catalysts, the selectivity of 3-EN was dominant regardless of particle size. The study also showed that the electronic interactions between Pd nanoparticles and TiO2 support increased with decreasing particle size, leading to enhanced selectivity of 3-VA. Strong metal-support interactions induced at elevated temperatures did not significantly affect the selectivities of 3-VA and 3-EN. Pd nanoparticles supported on SiO2 without electronic metal-support interactions preferred the reduction of the vinyl group of 3-NS. This research emphasizes the importance of electronic metal-support interactions in governing the selectivity for hydrogenation of unsaturated nitroarene reactions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Siyu Long, Lingyu Zhang, Zhuoyue Liu, Huibin Jiao, Aiwen Lei, Wei Gong, Xianglin Pei
Summary: In this study, a bimetallic Pt-Ni/Chitin catalyst was prepared using renewable biomass resource chitin as support. The catalyst exhibited efficient and selective hydrogenation ability with good stability. This utilization of biomass resources to build catalyst materials is of great importance for green and sustainable chemistry.
Article
Chemistry, Physical
Lu-Jie Zuo, Kun-Ze Xue, Shi-Long Xu, Yuan Kong, Hai-Wei Liang
Summary: This study reports the synthesis of structurally ordered Rh3Sn2 intermetallic catalysts, which exhibited a high selectivity of 95.1% in the hydrogenation of 4-nitrostyrene to 4-aminostyrene. Density functional theory calculations reveal that the addition of Sn atom significantly improves the adsorption of nitrostyrene through the nitro group on the Rh3Sn2 (110) surface. Moreover, a significant electronic effect is formed between Rh and Sn through charge transfer, making the Rh3Sn2 intermetallic compound more favorable for the hydrogenation of the nitro group.
Article
Chemistry, Multidisciplinary
Lingling Zhang, Jing Pan, Li Liu, Shuaishuai Zhang, Xiao Wang, Shuyan Song, Hongjie Zhang
Summary: The incorporation of transition metals with noble metals into nanoalloys allows for modulation of electronic structures and spatial arrangements to manipulate target catalytic reactions. A highly efficient synthesis of IrCo nanoalloys at low temperatures has been reported, breaking through thermodynamic limitations and enabling a high-performance selective hydrogenation system using light irradiation.
Article
Chemistry, Physical
Yuxuan Ma, Dan He, Burenbayaer Borjigin, Xiaoxue Yang, Xiaojing Wang, Fenghua Bai
Summary: The selective hydrogenation of nitroarenes has wide application in industrial production. Combining Cu2O and tantalate catalysts can increase the activity and selectivity. The activity and selectivity are related to the catalysts' intrinsic basicity and the preferential adsorption toward functional groups.
Article
Nanoscience & Nanotechnology
Li Gao, Jie Liu, Xia Zhong, Ying Zhang, Junnan Chen, Mozaffar Shakeri, Xia Zhang, Bingsen Zhang
Summary: Selective hydrogenation of substituted nitroaromatic compounds to produce functionalized anilines is both pivotal and challenging. Supported bimetallic catalysts usually exhibit enhanced selectivity in this reaction because of the distinctive synergetic effect of two metals, such as the effect of electron state regulation. In this study, Y-zeolite-supported PtCo and PtFe/PtNi bimetallic catalysts were designed and synthesized, and their catalytic performances in the chemoselective hydrogenation of 3-nitrostyrene (3 NS) were investigated. The PtCo/Y (3.0 wt % Pt, 300 degrees C) catalyst showed optimal performances with 74.43% 3-vinylaniline (3-VA) selectivity at 99.75% 3-NS conversion, attributed to the introduction of Co, which regulates the electronic state and structure of Pt, thus significantly improving the selectivity to 3-VA. This work paves the way for designing and synthesizing more efficient supported metal catalysts at the nanoscale.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Gabriel Abarca, Wellington D. G. Goncalves, Brunno L. Albuquerque, Jairton Dupont, Martin H. G. Prechtl, Jackson D. Scholten
Summary: Bimetallic RuPd nanoparticles immobilized in ionic liquids showed high catalytic activity for the selective hydrogenation of benzene and phenol, producing cyclohexane and cyclohexanol. The activity and selectivity are dependent on the ratio of Ru to Pd in the bimetallic nanoparticles.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Yao Sheng, Baoqin Wu, Jiaan Ren, Xueguang Wang, Xiujing Zou, Xionggang Lu
Summary: In this study, silica supported N-doped carbon layers encapsulating Co-Cu nanoparticles were prepared, and it was found that Co1C0.30@CN/SiO2 with a Cu/Co molar ratio of 0.30:1 exhibited higher catalytic activity and stability. The addition of Cu facilitated the formation of highly active Co-N sites and N-doped carbon layer, which could protect Co from oxidation. Mechanistic studies revealed that the interaction effect between Co and Cu atoms enhanced the selectivity during chemoselective hydrogenation of halogenated nitroarenes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Feifan Chen, Haohui Feng, Changsheng Feng, Feiyue Ge, Lijun Hu, Yue Chen, Han Zhang, Fang Cheng, Xue-Jun Wu
Summary: The body-centered tetragonal I-Cu2WS4 nanosheets and primitive tetragonal P-Cu2WS4 nanoflowers are successfully prepared as highly efficient photocatalysts for the selective hydrogenation of 3-nitrostyrene, producing 3-vinylaniline and 3-ethylnitrobenzene, respectively, with high selectivity and conversion, by selectively activating the nitro group (NO2) and carbon-carbon (CC) double bond.
Article
Chemistry, Physical
Martin J. Taylor, Simon K. Beaumont, Mohammed J. Islam, Sotirios Tsatsos, Christopher A. M. Parlett, Mark A. Issacs, Georgios Kyriakou
Summary: Bimetallic nanoparticles of Pt:Cu exhibit superior catalytic activity and high selectivity in the liquid-phase selective hydrogenation of furfural, while Ultra Dilute Alloy (UDA) formed by the galvanic replacement of Cu atoms with Pt atoms shows exceptionally high initial rates of hydrogenation under modest hydrogen pressures, surpassing the performance of monometallic Pt and other bimetallic catalyst compositions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Peicai Li, Xia Liu, Mingrui Guo, Yecan Pi, Ning Wang, Shuxing Bai, Yong Xu, Qi Sun
Summary: Phase engineering plays a crucial role in regulating catalytic performance, and understanding the structure-selectivity correlation remains a challenge. This study demonstrates that the body-centered cubic phase of PdCu is a highly active and selective catalyst for 3-nitrostyrene (NS) hydrogenation under mild conditions. The presence of NH3 center dot BH3 assists in the selective hydrogenation of -NO2, leading to the formation of 3-amino-styrene (AS).
Article
Energy & Fuels
Hao Zhao, Xiaoqing Liao, Haishuai Cui, Meichen Zhu, Fang Hao, Wei Xiong, Hean Luo, Yang Lv, Pingle Liu
Summary: In this study, a series of layered double hydroxides (LDH) derived CunCo1/MgAlOx catalysts with different metal ratios were prepared and applied in the efficient conversion of furfural to furfuryl alcohol. The synergistic interaction between Cu and Co significantly enhanced the catalyst activity and facilitated the formation of Cu2O, which acted as a Lewis acid site to polarize the carbonyl group (C = O) and promote the formation of furfuryl alcohol.
Article
Chemistry, Multidisciplinary
Ying Zhang, Jinfang Su, Junnan Chen, Chengshan Dai, Bingsen Zhang
Summary: In this study, a series of PtxFey-Al2O3 bimetallic catalysts were prepared, and the introduction of Fe significantly modified the properties of Pt, enhancing the selectivity of C=O hydrogenation. Among them, Pt3Fe-Al2O3 exhibited the best catalytic performance, with excellent reusability and relatively stable structure.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Applied
Kelong Ding, Ze-Nan Hu, Wenhui Zhang, Jiaxing Liang, Yiming Wang, Hong Li, Zejun Sun, Qionglin Liang, Hong-bin Sun
Summary: In this study, a bimetallic catalyst RhIn/ZIF-8 with inhibited activity was prepared to investigate the catalytic performance of different hydrogen sources on the chemoselective hydrogenation of nitrostyrene. It was found that hydrazine hydrate exhibited the highest selectivity for the nitro group, while H-2 showed the highest natural selectivity towards olefins.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Kalim A. Sheikh, Thomas A. Zevaco, Jelena Jelic, Felix Studt, Michael Bender
Summary: Here we present a cobalt catalysed one-pot synthesis of the dimethylacetal of acetaldehyde from synthesis gas and methanol. The resulting product can be used as a fuel additive directly or after transacetalisation with long-chain alcohols. The synthesis is achieved at moderate temperatures with high selectivities and CO-conversions. Variation of the promotor metal and support material in the catalyst reveals their significant impact on catalyst activity and structure. Additionally, temperature and pressure variations provide insight into the ongoing processes.
Article
Nanoscience & Nanotechnology
Shan Jiang, Hai-Yang Cheng, Ru-Hui Shi, Pei-Xuan Wu, Wei-Wei Lin, Chao Zhang, Masahiko Arai, Feng-Yu Zhao
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Physical
Weiwei Lin, Haiyang Cheng, Qifan Wu, Chao Zhang, Masahiko Arai, Fengyu Zhao
Article
Chemistry, Multidisciplinary
Ruhui Shi, Shan Jiang, Haiyang Cheng, Peixuan Wu, Chao Zhang, Masahiko Arai, Fengyu Zhao
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Xinchao Wang, Peixuan Wu, Zhuangqing Wang, Leilei Zhou, Yanchun Liu, Haiyang Cheng, Masahiko Arai, Chao Zhang, Fengyu Zhao
Summary: The Cl-modified Ru/TiO2 catalyst shows higher phenol selectivity in the conversion of guaiacol, but exhibits weaker aromatic ring hydrogenation ability, resulting in slower consumption of phenol.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Zhuangqing Wang, Xinchao Wang, Chao Zhang, Masahiko Arai, Leilei Zhou, Fengyu Zhao
Summary: The selective hydrogenation of furfural to furfuryl alcohol over Pd/TiH2 catalysts was studied, with 0.5Pd/TiH2 showing the highest selectivity at 73% at 60 degrees C. The physicochemical properties of catalysts were well characterized, revealing the significant influence of Pd particle size, electronic state, and surface defects on catalytic performance. Furfural preferentially adsorbs on the boundary of Pd particles and TiH2 support, leading to high furfuryl alcohol selectivity.
MOLECULAR CATALYSIS
(2021)
Correction
Chemistry, Physical
Zhuangqing Wang, Xinchao Wang, Chao Zhang, Masahiko Arai, Leilei Zhou, Fengyu Zhao
MOLECULAR CATALYSIS
(2022)
Article
Electrochemistry
Qiming Sun, Yiwei Zhao, Xiaodan Yu, Chao Zhang, Shuangxi Xing
Summary: This study demonstrates a facile route to synthesize a bifunctional electrocatalyst with CoO nanoparticles embedded in N-doped carbon by interface engineering. The synthesized material exhibits excellent electrocatalytic activity and stability for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a zinc-air battery.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Qiu Xu, Chungang Wang, Zongling Shang, Chao Zhang, Xinchao Wang, Qiang Liu, Lingling Dang, Yanchun Liu, Fengyu Zhao
Summary: This study investigates the transformation of lactones to diols over Cu/Al2O3 and CuLax/Al2O3 catalysts, and discusses the promoting role of LaOx species in improving the selectivity and stability of the catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Xinchao Wang, Zhuangqing Wang, Leilei Zhou, Yanchun Liu, Yinze Yang, Liyan Zhang, Zongling Shang, Hui Li, Tingting Xiao, Chao Zhang, Fengyu Zhao
Summary: A Ti-modified SiO2 supported catalyst Ru/Ti-SiO2 was developed for the highly efficient conversion of guaiacol to phenol in an aqueous phase, showing enhanced activity and selectivity. The presence of Ti-O-Si linkages in the support promoted the formation of defect-rich TiOx species, which helped inhibit the aggregation of Ru particles and increased their dispersion, leading to improved catalytic performance. The main active sites for the deoxygenation of guaiacol on the Ru/Ti-SiO2 catalyst were found to be the interface between Ru and TiOx species (Ru-0-Ti3+), facilitating the activation of the C-O bond.
Article
Chemistry, Multidisciplinary
Peixuan Wu, Haiyang Cheng, Xinchao Wang, Ruhui Shi, Chao Zhang, Masahiko Arai, Fengyu Zhao
Summary: The synthesis of a new environmentally friendly, self-healing, and recyclable polymeric material PUUa-DA, using CO2 and bio-based furfuryl amine, demonstrates high thermal stability and mechanical properties. The incorporation of reversible hydrogen bonds and heat-responsive Diels-Alder bonds enables 94% recovery of tensile strength upon heating, making it a potential functional material for various practical applications.
Review
Chemistry, Multidisciplinary
Xinchao Wang, Masahiko Arai, Qifan Wu, Chao Zhang, Fengyu Zhao
Article
Chemistry, Physical
Qiang Liu, Zhenbo Zhao, Masahiko Arai, Chao Zhang, Ke Liu, Ruhui Shi, Peixuan Wu, Zhuangqing Wang, Weiwei Lin, Haiyang Cheng, Fengyu Zhao
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Bin Zhang, Mark Douthwaite, Qiang Liu, Chao Zhang, Qifan Wu, Ruhui Shi, Peixuan Wu, Ke Liu, Zhuangqing Wang, Weiwei Lin, Haiyang Cheng, Ding Ma, Fengyu Zhao, Graham J. Hutchings
Article
Chemistry, Physical
Leilei Zhou, Weiwei Lin, Ke Liu, Zhuangqing Wang, Qiang Liu, Haiyang Cheng, Chao Zhang, Masahiko Arai, Fengyu Zhao
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
