Article
Chemistry, Physical
Peiyi Ji, Xinchen Han, Zonglin Li, Qingxiao Zhang, Weihua Cheng, Jie Sheng, Runze Fan, Qingliang Liao, Chenhao Zhang, Hui Li
Summary: This study fabricated a low-coordinated Pt catalyst derived from Ni-Pt alloy anchored on silica, which showed enhanced catalytic properties for the hydrogenation of aromatic nitro-compounds due to the unsaturated coordination structure.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Raimundo C. Rabelo-Neto, Mayra P. Almeida, Erika B. Silveira, Martin Ayala, Caleb D. Watson, Jesus Villarreal, Donald C. Cronauer, A. Jeremy Kropf, Michela Martinelli, Fabio B. Noronha, Gary Jacobs
Summary: By doping 1%Ru/m-ZrO2 with sodium, selectivity tuning between CO and CH4 during CO2 hydrogenation was achieved by increasing basicity through Na loading. The enhanced basicity weakened the formate C-H bond, accelerating C-H bond formation of formate and promoting CO formation at the Ru/m-ZrO2 interface, while also increasing the coverage of Na on ensembles of Ru atoms responsible for methanation. Increasing Na content shifted selectivity from CH4 to CO, with potential applications in Fischer-Tropsch synthesis or methanol-to-gasoline. However, Na exacerbates site blocking and deactivation, as shown in DRIFTS and XPS results.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Chemical
Xiaonan Duan, Jiabin Yin, Mengmeng Huang, Aoxing Feng, Weisong Fu, Huaxiang Chen, Zhenfu Huang, Yagang Ding, Jisong Zhang
Summary: The study successfully established a kinetic model for the hydrogenation of m-dinitrobenzene, obtaining activation energies and pre-exponential factors through a kinetic network. The accuracy and rationality of the model were verified through comparison with literature data, and it provided insights into the characteristics of different catalysts and rate determining steps for further optimization of the synthesis process.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Zhang Ruijie, Jin Haibo, Ma Lei, Yang Suohe
Summary: In this paper, the effects of preparation conditions on the reaction activity of Ru-Sn and Pd-based bimetallic composite catalysts were studied. It was found that the Ru-Sn bimetallic active center was predominantly located in the Ru-based catalysts. Furthermore, the influence of reaction parameters on hydrogenation reactions was examined.
Article
Engineering, Environmental
Ren Tu, Wei Lv, Yan Sun, Yujian Wu, Yangwen Wu, Xudong Fan, Enchen Jiang, Qiang Lu, Xiwei Xu
Summary: In this study, a novel catalyst was prepared and successfully used for the direct hydrogenation of phenol to cyclohexanol, with a high yield of 98.2%. The results showed that the interface of Ru-RuO2-Nb2O5 in the catalyst exhibited high hydrogenation activity, and the addition of Nb2O5 inhibited the reduction of RuO2 species.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yinghao Wang, Yongxing Wang, Yaowei Lu, Qiue Cao, Wenhao Fang
Summary: Activated charcoal-dispersed Ru-Ir alloy nanoparticles, with a size of approximately 2.2 nm, serve as a selective and reusable hydrogenation catalyst for the conversion of 5-hydroxymethylfurfural to valuable liquid biofuel, achieving a high yield of 99% to 2,5-dimethylfuran at only 120 degrees C. The synergistic effect between the Ru and Ir species leads to an acceleration in the reduction of substrate and intermediates.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Jiajia Zhao, Yuan Wang, Hamidreza Arandiyan, Anita M. D'Angelo, Aaron Seeber, Daksh Shah, Rachel A. Caruso, Ivan S. Cole, Yunxia Yang, Karen Wilson, Renata Lippi, Adam F. Lee
Summary: We demonstrate how subtle changes in a mixed phase zirconia support induce large changes in catalyst activity and selectivity. Ru/Sn0.2Zr0.8O2 catalyst exhibited similar structrue and metal ion distribution as Ru/ZrO2, but XRD evidence showed new crystalline phases where Sn substituted for Zr. Operando infrared spectroscopy identified linear surface CO* as a catalytic spectator, and Sn0.2Zr0.8O2 promoted CO2 decomposition, favoring a reverse water gas shift pathway.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Xiaoyan Liu, Sheng Ye, Guojun Lan, Panpan Su, Xiaoli Zhang, Cameron Alexander Hurd Price, Ying Li, Jian Liu
Summary: Nitrogen-doped nanocarbons are commonly used as supports for metal-heterogeneous catalytic reactions to enhance catalytic activity and stability. By selectively locating ultrafine Ru NPs on inner carbon shell and different N species on the outer shell, a high conversion rate of levulinic acid hydrogenation was achieved through the interaction of alkaline pyridinic N species as anchor points. This study sheds light on designing nanoreactors at atomic scale and investigating heterogeneous catalysis at molecular level.
Article
Engineering, Environmental
Christos Chatzilias, Eftychia Martino, Sotirios Tsatsos, Georgios Kyriakou, Alexandros Katsaounis, Constantinos G. Vayenas
Summary: In this study, the kinetic mechanism of CO2 hydrogenation was investigated using a scaled up electropromoted reactor loaded with nine Ru/YSZ/Au electrochemical cells. The results show that the partial pressures of H2 and CO2 have a significant impact on the product distribution and reaction rate. Additionally, the experiment validates the charge transfer behavior during the electrochemical promotion process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Cristian H. Campos, Krishnamoorthy Shanmugaraj, Tatiana M. Bustamante, Edgardo Leal-Villarroel, Victor Vinoth, Radhamanohar Aepuru, Ramalinga Viswanathan Mangalaraja, Cecilia C. Torres
Summary: Pt-nanoparticles supported on halloysite-nanotubes were selectively deposited onto the inner or outer surface to evaluate their stability and catalytic performance for hydrogenation reactions. Pt(IN)/HNT catalyst showed better performance and stability compared to Pt(OUT)/HNT, with the latter retaining catalytic activity after 15 cycles.
Article
Chemistry, Physical
Hao-Ze Chen, Ji Liu, Teng-Ge Mi, Yang-Wen Wu, Bin Hu, Xin-Yue Zhou, Bing Zhang, Qiang Lu
Summary: Cu-based catalysts are efficient for furfural (FF) hydrogenation. The doping of Ni can enhance the catalyst's adsorption capacity and H2 dissociation ability, leading to improved hydrogenation activity.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
G. Bharath, K. Rambabu, Abdul Hai, Fawzi Banat, Saravanan Rajendran, Dionysios D. Dionysiou, Pau Loke Show
Summary: Bimetallic Ru-Pd catalysts, including Ru-Pd alloyed nanoparticles incorporated into hexagonal boron nitride catalysts, have shown promising results in converting furfural to furfural alcohol at low temperatures and producing valuable cyclopentanone at high temperatures. The catalyst is also capable of decarbonylating furfural into furan and tetrahydrofuran under mild reaction conditions using different solvents. Additionally, the catalyst demonstrated high activity and stability in upgrading furfural-rich bio-oils, making it suitable for industrial applications.
Article
Chemistry, Multidisciplinary
Yan Xu, Chenguang Wu, Yan Wang, Ying Zhang, Han Sun, Haijun Chen, Yujun Zhao
Summary: The RuPt/AC bimetallic catalyst showed excellent performance in the hydrogenation of phthalates, promoting reaction rate and enhancing product selectivity. The strong interaction between RuPt bimetallic nanoparticles facilitated electron transfer, improving catalytic efficiency and stability.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Applied
Weiyin Wang, Lu Lin, Haifeng Qi, Wenxiu Cao, Zhi Li, Shaohua Chen, Xiaoxuan Zou, Tiehong Chen, Nanfang Tang, Weiyu Song, Aiqin Wang, Wenhao Luo
Summary: A highly efficient Rh@Al2O3@C single-atom catalyst (SAC) was developed for the hydrogenation of m-chloronitrobenzene, achieving excellent catalytic performance and a sustained selectivity of around 98% to m-chloroaniline. This was attributed to the atomic dispersion of metal and enhanced accessibility of acid function sites.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Shuai Xu, Mang Niu, Guowei Zhao, Shujun Ming, Xingyun Li, Qilong Zhu, Liang-Xin Ding, Minjun Kim, Asma A. Alothman, Mohammed Sheikh Saleh Mushab, Yusuke Yamauchi
Summary: Exploring highly efficient Pt-free catalysts for hydrogen evolution reaction (HER) is critical for hydrogen (H-2) production. In this study, a novel HER electrocatalyst with abundant ultra-small (2-3 nm) Ru confined by a B, N co-doped polar carbon surface (Ru/(B-N)-PC) was developed. The Ru/(B-N)-PC catalyst exhibited superior performance with a low overpotential, low Tafel slope and excellent durability, outperforming the benchmark Pt/C catalyst. The electron communication between the B, N co-doped carbon surface and ultra-small Ru nanoparticles contributed to the electronic modification of Ru and enhanced the hydrogen evolution reaction.
Article
Chemistry, Physical
Qifan Wu, Chao Zhang, Weiwei Lin, Haiyang Cheng, Masahiko Arai, Fengyu Zhao
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)
