Article
Engineering, Environmental
Yao Sheng, Yang Liu, Yuchen Yin, Xiujing Zou, Jiaan Ren, Baoqin Wu, Xueguang Wang, Xionggang Lu
Summary: A activated carbon supported Pt-Rh alloy catalyst was synthesized using a facile incipient wetness impregnation strategy, and showed improved activity and selectivity for the hydrogenation of nitrobenzene to p-aminophenol. The presence of Rh promoted the formation of well dispersed Pt-Rh bimetallic nanoparticles on the catalyst surface, accompanied by possible electron transfer from Rh to Pt. Density functional theory calculations indicated that the electron-rich Pt inhibited the adsorption of the generated phenylhydroxylamine intermediate, resulting in excellent selectivity for p-aminophenol.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Dan Liu, Ismail Nadia, Chaohe Fang, Kuan He, Binghui Ge, Hailong Chen, Zhuo Chen
Summary: This study demonstrates the photo-enhanced catalytic activity for the hydrogenation of nitrobenzene. Compared to the counterpart without light irradiation, the catalytic reaction rate significantly improves under simulated sunlight, achieving better catalytic performance. Further mechanism investigations reveal that light illumination promotes the activation of hydrogen and nitrobenzene molecules, resulting in high-efficiency hydrogenation.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Physical
Jie Luo, Chaojie Zhang, Chong Yao, Dandan Ma, Yixin Chen, Min Tian, Haoxuan Xie, Limei Pan, Yaoyao Zhen, Ruihao Chen, Jiwei Wu, Chunshan Lu, Feng Feng, Xiaoliang Xu, Qingtao Wang, Qunfeng Zhang, Xiaonian Li
Summary: This study investigated the effect of S-doping on the catalytic performance of platinum-based catalyst for the selective hydrogenation of nitrobenzene to produce p-Aminophenol. The activated carbon carrier was modified using high-temperature calcination and an impregnation technique incorporating organic sulfur. The amount of sulfur doping was found to impact the particle size and performance of the catalyst. The strong interaction between S and Pt resulted in the capture of Pt electrons, reducing catalyst reactivity and suppressing over-hydrogenation side reactions, leading to improved selectivity towards p-Aminophenol formation.
MOLECULAR CATALYSIS
(2023)
Article
Engineering, Chemical
Fengxue Zhang, Yongjun Jiang, Sheng Dai, Xinjia Wei, Yuan Ma, Huiying Liao, Yuxi Qin, Qingpo Peng, Xiuge Zhao, Zhenshan Hou
Summary: Zirconium-phosphate-supported platinum catalysts were prepared and thoroughly characterized. The 1% Pt/ZrP catalyst showed excellent catalytic performance for the selective hydrogenation of nitrobenzene. The high dispersion and leaching resistance of the Pt sites resulted in excellent recyclability of the catalysts. In situ DRIFT characterization demonstrated the adsorption of nitro functional group on acid sites of zirconium phosphate and its conversion to para-aminophenol.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Tingting Liu, Zizhu Wang, Mingxi Liu, Tao Hu, Shenghu Zhou
Summary: This study presents a simple method to construct hollow silica nanotubes using a templating approach. By coordinating metal ions with bis-terpyridine, polymeric bis-terpyridine-metal complexes are formed and self-assemble into tubular organogels. The subsequent silica deposition and calcination result in metal oxide-doped hollow silica nanotubes. The obtained nanotubes show good catalytic performance and can be used as catalyst supports due to their favorable textural properties.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Xiqiang Tian, Muhammad Zahid, Wang Sun, Yujun Zhu
Summary: Different morphologies of TiO2 supports can lead to varied surface properties and catalytic activities of catalysts. This study synthesized three-dimensional hierarchical structure TiO2 using a novel evaporation-induced assisted hydrothermal approach, controlling morphology and size by adjusting the amount of Brij-35. The TiO2 supported palladium catalysts showed remarkable catalytic activity in selective hydrogenation of 4-nitrophenol due to the specific hierarchical structure and higher surface area of TiO2-SUT.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Xiaoli Yang, Mingxing Liang, Jianfeng Jia, Haishun Wu
Summary: In this study, the catalytic transfer hydrogenation of nitrobenzene on a gold surface under alkaline conditions was systematically simulated, revealing the key intermediate PhNO* and reaction mechanism. The breaking of the first N-O bond in Ph(O)N=N(O)Ph* was identified as the rate-determining step in the conversion of nitrobenzene to azobenzene.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Lin Fu, Wei Zhou, Ming Wen, Qingsheng Wu, Weiying Li, Dandan Wu, Quanjing Zhu, Jiaqi Ran, Panpan Ren
Summary: Layered CuNi-Cu2O/NiAlOx nanosheets were successfully synthesized through hydrothermal synthesis, calcination, and reduction treatment, allowing rapid and efficient conversion of p-NP. The designed nanoalloy/bimetal-oxide heterostructure provides a solution for rapid reduction of aminoaromatics from nitroaromatics wastewater even at high concentrations.
Article
Chemistry, Physical
Libo Sun, Xinyuan Ren, Zequn Yin, HeShun Jing, Miao Zhang, Xuerong Zhou, Xun Sun, Huijuan Su, Caixia Qi
Summary: Bimetallic catalysts of Pd-Au supported on TiO2 with traces of Pd were prepared with improved catalytic activities compared to Au/TiO2. The minimal loading of Pd favors Au dispersion and leads to small-sized Au NPs. The presence of Au/Pd interfaces and interaction between Au and Pd results in electron-enriched Au NPs and positively charged Pd, improving the catalytic performance of 0.01%Pd-0.5%Au/TiO2.
APPLIED SURFACE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Viktoria Hajdu, Adam Prekob, Gabor Muranszky, Ferenc Kristaly, Lajos Daroczi, Lajos Harasztosi, Zoltan Kaleta, Bela Viskolcz, Miklos Nagy, Laszlo Vanyorek
Summary: To address the challenges in the development of industrial catalysts, researchers have prepared intelligent, magnetizable NiFe2O4- and CoFe2O4-supported palladium catalysts that can be easily recovered by magnetic separation. The easy and fast preparation method involved solvothermal synthesis and sonochemical decomposition. Amino functionalization of the supports enhanced the metal-support interaction. The amine-functionalized catalysts showed better stability and retained high activity due to reduced palladium leaching.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Yuchen Wang, Yaoyu Liu, Zhiyue Zhao, Zhikeng Zheng, Alina M. Balu, Rafael Luque, Kai Yan
Summary: A noble-metal free topological FeSi catalyst (M-FeSi) was synthesized using a solvent-free microwave strategy for efficient electrocatalytic hydrogenation of nitrobenzene (Ph-NO2) in neutral medium. The M-FeSi catalyst exhibited excellent conversion of Ph-NO2 and yield of Ph-NH2, surpassing previous candidates and FeSi catalyst synthesized via traditional methods.
Article
Environmental Sciences
Shilin Zhang, Laifu Zhong, Zonglin Xu, Jinqing Hu, Aidong Tang, Xiaochao Zuo
Summary: By using a mineral-modulated catalyst, the hydrogenation reduction process of p-nitrophenol was facilitated, leading to fast reaction rate and high conversion. The designed Co/EAtp@C catalyst showed good electron transfer mechanism and stability, as well as magnetic separability.
Article
Chemistry, Physical
Elena N. Terekhova, Olga B. Belskaya, Rinat R. Izmaylov, Mikhail V. Trenikhin, Vladimir A. Likholobov
Summary: Nickel catalysts were synthesized using carbon-mineral supports derived from sapropel, and the effect of support nature and active component precursor on catalytic activity in liquid-phase nitrobenzene hydrogenation was studied. Catalysts with a smaller fraction of carbon in the support exhibited higher activity regardless of the precursor nature. The catalysts synthesized using nickel nitrate and nickel formate showed the highest activity with nitrobenzene conversion of 65% and 51% respectively after 1 hour of reaction. The catalysts maintained high activity with 100% aniline selectivity after six reaction cycles. The presence of sulfur in the nickel precursor decreased catalytic activity (conversion less than 3%) due to the formation of the sulfide phase.
Article
Biochemistry & Molecular Biology
Adam Prekob, Akos Szamosvolgyi, Gabor Muranszky, Janos Lakatos, Zoltan Konya, Bela Fiser, Bela Viskolcz, Laszlo Vanyorek
Summary: Carbon foam was synthesized by carbonization of 4-nitroaniline, and then grinded to achieve an efficient catalyst support. Palladium nanoparticles were deposited onto the surface of the support, which exhibited high catalytic activity in nitrobenzene hydrogenation. The designed catalyst showed excellent performance with high conversion, yield, and selectivity, and remained active even after four cycles of reuse without regeneration.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Chemical
Yu Jia, Fang Li, Yisheng Zhang, Zhimiao Wang, Conghui Che, Wei Xue, Yanji Wang
Summary: p-Aminophenol (PAP) was successfully synthesized via transfer hydrogenation using a Pd/AC + SO42-/ZrO2 catalyst and formic acid as the hydrogen source. The synthesis of PAP was influenced by the loading of Pd and the relative proportions of Pd-0 and Pd2+. The optimized reaction conditions achieved high conversion and selectivity. However, the stability of the catalyst needs to be improved.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Astronomy & Astrophysics
Mary L. Rad, Luyao Zou, James L. Sanders, Susanna L. Widicus Weaver
ASTRONOMY & ASTROPHYSICS
(2016)
Article
Chemistry, Physical
Luyao Zou, Brian M. Hays, Susanna L. Widicus Weaver
JOURNAL OF PHYSICAL CHEMISTRY A
(2016)
Article
Astronomy & Astrophysics
Mary L. Rad, Luyao Zou, James L. Sanders, Susanna L. Widicus Weaver
ASTRONOMY & ASTROPHYSICS
(2016)
Article
Physics, Atomic, Molecular & Chemical
Luyao Zou, Susanna L. Widicus Weaver
JOURNAL OF MOLECULAR SPECTROSCOPY
(2016)
Article
Chemistry, Physical
Michael C. McCarthy, Luyao Zou, Marie-Aline Martin-Drumel
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Physics, Atomic, Molecular & Chemical
A. J. Mesko, Luyao Zou, P. Brandon Carroll, Susanna L. Widicus Weaver
JOURNAL OF MOLECULAR SPECTROSCOPY
(2017)
Article
Chemistry, Multidisciplinary
Ma Bowen, Guo Jianfeng, Zou Luyao, Dai Weilin, Fan Kangnian
CHINESE JOURNAL OF CHEMISTRY
(2011)
Article
Physics, Atomic, Molecular & Chemical
Nadine Wehres, Trevor N. K. Cross, Mary L. Rad, Luyao Zou, Anne Carroll, Susanna L. Widicus Weaver
JOURNAL OF MOLECULAR SPECTROSCOPY
(2014)
Article
Instruments & Instrumentation
Luyao Zou, Roman A. Motiyenko, Laurent Margules, Eugen A. Alekseev
REVIEW OF SCIENTIFIC INSTRUMENTS
(2020)
Article
Astronomy & Astrophysics
J. Cernicharo, C. Cabezas, S. Bailleux, L. Margules, R. Motiyenko, L. Zou, Y. Endo, C. Bermudez, M. Agundez, N. Marcelino, B. Lefloch, B. Tercero, P. de Vicente
Summary: The research team discovered CH3CO+ in space using radio telescopes, and determined its characteristics through experiments and theoretical calculations, predicting its spectrum accurately up to 500 GHz. The abundance ratio between H2CCO and CH3CO+ is around 44, due to the high proton affinity of H2CCO.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Optics
Luyao Zou, Roman A. Motiyenko
Summary: This study introduces a specific window function called "Voigt-1D" window for chirped pulse spectroscopy, which corrects the spectra to Voigt lineshape and provides wide tunability for controlling the SNR and lineshape of the final spectral lines. Results show that the Voigt-1D window is able to produce 100% SNR enhancement on average compared to un-windowed spectra.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2021)
Article
Astronomy & Astrophysics
Luyao Zou, Jean-Claude Guillemin, Roman A. Motiyenko, Laurent Margules
Summary: This work aims to provide the direct laboratory measurement of the millimeter- and submillimeter-wave spectrum of trans-formaldoxime. Rotational lines of trans-formaldoxime have been measured and assigned from 150 to 660 GHz, with spectroscopic constants derived using both Watson's A and S reduction Hamiltonian.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Luyao Zou, Susanna L. Widicus Weaver
ASTROPHYSICAL JOURNAL
(2017)
Article
Astronomy & Astrophysics
Susanna L. Widicus Weaver, Jacob C. Laas, Luyao Zou, Jay A. Kroll, Mary L. Rad, Brian M. Hays, James L. Sanders, Dariusz C. Lis, Trevor N. Cross, Nadine Wehres, Brett A. McGuire, Matthew C. Sumner
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
(2017)
