Article
Chemistry, Physical
Zonghang Li, Xiaohu Yi, Qiwen Wang, Yiming Li, Diantao Li, Regina Palkovits, Anna Katharina Beine, Chunguang Liu, Xiaohong Wang
Summary: This study achieved the direct conversion of cellulose to glycolic acid (GA) with a high yield of up to 75% using acidic/redox polyoxometalates (POMs) as catalysts in a one-pot reaction. Among the three POMs studied, H3PMo showed the most promising catalytic activity. The reaction pathway involves the activation of O2 and the crucial role of the reduced form [PMo10 VIMo2VO39]5- in GA production.
Article
Nanoscience & Nanotechnology
Yufa Feng, Xuefeng Zhang, Youxiang Shao, Xiaodong Chen, Huize Wang, Junhao Li, Ming Wu, Huafeng Dong, Quanbing Liu, Hao Li
Summary: In this study, uniform Mox-Ni0.8Cu0.2O nanowires were successfully fabricated as catalysts for ammonia borane (AB) methanolysis. The acidity of the catalysts' surface was flexibly modulated, leading to high catalytic activity. The relationship between the quantity of moderated acid sites and the activity of AB methanolysis was determined for the first time, and a plausible mechanism for the reaction was proposed.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Xiaohan Zhao, Qingzheng Wang, Rungthip Kunthom, Hongzhi Liu
Summary: In this study, a novel and excellent Brønsted acid-derived silsesquioxane solid catalyst PCS-DDSQ-SO3H-x was successfully prepared through an electrophilic aromatic substitution reaction. The catalyst exhibited outstanding catalytic performance for the methanolysis of styrene oxide, achieving high conversion rate and selectivity.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Haoliang Huang, Yu-Chung Chang, Yu-Cheng Huang, Lili Li, Alexander C. Komarek, Liu Hao Tjeng, Yuki Orikasa, Chih-Wen Pao, Ting-Shan Chan, Jin-Ming Chen, Shu-Chih Haw, Jing Zhou, Yifeng Wang, Hong-Ji Lin, Chien-Te Chen, Chung-Li Dong, Chang-Yang Kuo, Jian-Qiang Wang, Zhiwei Hu, Linjuan Zhang
Summary: LiNiO2 catalyst exhibits super-efficient activity during the oxygen evolution reaction (OER) due to the formation of double O 2p holes states, as observed by operando XAS, XRD, and Raman spectroscopy. Designing efficient OER catalysts is crucial for energy conversion devices.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Chun Chang, Shijie Wang, Pengkun Guo, Guizhuan Xu, Xiaoyang Zheng, Chaojun Du, Youzhou Jiao
Summary: This study investigates the production of methyl levulinate (ML) through metal sulfate-catalyzed methanolysis from high solid content of cellulose. The results show that high yields can be obtained under optimized reaction conditions, and the metal sulfate catalyst can be reused multiple times. The study also reveals that cellulose particles shrink over time.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Danrui Zhu, Mo Liu, Shilong Li, Yufeng Mao, Jianjun Chen, Qiulin Zhang, Ping Ning
Summary: A series of CuOx/TiO2-ZrO2 (Cu/TZ) catalysts were prepared and applied in catalytic elimination of chlorobenzene. Cu/TZ exhibited superior catalytic performance with 90% conversion at a relatively low temperature, lower activation energy and higher reaction rate compared to Cu/T and Cu/Z. The superior performance of Cu/TZ was attributed to its well-dispersed CuOx active species, abundant surface adsorbed oxygen, and plentiful surface acid density, particularly the Lewis acid sites.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xiao bin Gao, Yucheng Wang, Weicheng Xu, Huan Huang, Kuangmin Zhao, Hong Ye, Zhi-You Zhou, Nanfeng Zheng, Shi-Gang Sun
Summary: Metallic particles can inhibit the demetalation of Fe SACSs by acting as electron donors and strengthening the Fe-N bond, thereby preventing electrochemical Fe dissolution. Different types, forms, and contents of metal particles have varying effects on the Fe-N bond strength. Screening a particle-assisted Fe SACS resulted in a 78% reduction in Fe dissolution and enabled continuous operation for up to 430 hours in a fuel cell.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Xuefeng Wang, Haeseong Jang, Shangguo Liu, Zijian Li, Xuhao Zhao, Yunfei Chen, Min Gyu Kim, Qing Qin, Xien Liu
Summary: An acid-stable Ru solid solution oxide catalyst with Bronsted acid sites and enhanced electron transfer from W to Ru has been developed to improve the catalytic activity and long-term stability of the oxygen evolution reaction (OER) in acidic conditions.
ADVANCED ENERGY MATERIALS
(2023)
Article
Materials Science, Paper & Wood
Songshan Jiang, Wei Xiong, Bai He, Min Li
Summary: Catalytic hydrolysis of fibrous cellulose (CHFC) over framework catalysts was studied under microwave irradiation, showing a significant enhancement of the process with mesoporous catalysts. The pore size and structure of the catalysts have a dominant role in the catalytic hydrolysis of polymer products, while acidity plays a secondary role in further decomposing secondary products.
Article
Engineering, Chemical
Zanbu Geng, Yang Yang, Yixi Wang, Tingyu Zhu, Wenqing Xu
Summary: The study utilized a composite metal oxide solid acid catalyst to catalytically regenerate a CO2-rich 5 M MEA solution, and achieved promising results. The catalyst exhibited high catalytic activity and low cost, making it a potential candidate for large-scale industrial applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yu Zhou, Shaopeng Rong, Huifang Xie, Yanfang Feng, Danni Ding, Weijiang He, Nan Zhang, Jingling Lu
Summary: In this study, the acidic sites of layered MnO2 were regulated to improve its selective catalytic oxidation (SCO) performance towards NH3. The resulting MnO2 achieved complete conversion of NH3 at lower temperatures (100 degrees C) than reported noble-metal catalysts. The increase in active oxygen species and enhancement of acidic sites facilitated the adsorption and activation of NH3. This research reveals the functional role of acidic sites in NH3-SCO and provides insight for the rational design of catalysts with excellent N2 selectivity and low-temperature NH3-SCO activity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Yongfeng Zhu, Wenbin Li, Yuanbo Huang, Yunwu Zheng, Duo Wang, Yueyuan Ye, Shuirong Li, Zhifeng Zheng
Summary: This paper presents a study on the production of furan compounds via catalytic pyrolysis of cellulose on a two-staged fixed-bed reactor using four solid acidic catalysts. The selectivity of furans varies with different catalysts, with TS-1 and Nb2O5 showing higher selectivity and ZSM-5 and γ-Al2O3 lowering the furan selectivity. The relationship between the physicochemical properties of catalysts and their catalytic selectivity towards furan compounds was discussed based on characterization results.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Applied
Elisa Garcia-Lopez, Francesca R. Pomilla, Igor Krivtsov, Aida Serrano, Leonarda F. Liotta, Silvia Villar-Rodil, Juan Paredes, Giuseppe Marci
Summary: The local structure changes of HPAs when immobilized on solids play a crucial role in influencing their acidity and photoredox properties. HPAs supported on carbon materials or metal oxides exhibit increased activity in photocatalytic experiments, with the highest activity observed in HPAs supported on BN. The XAS data suggests that the enhanced activity of HPAs supported on BN is due to the stabilization of W octahedral coordination.
Article
Chemistry, Multidisciplinary
Wei Zhang, Guo-Qiang Tian, Gang Wu, Si-Chong Chen, Yu-Zhong Wang
Summary: In recent years, chemical recycling to monomer (CRM) has become an advanced strategy for dealing with post-consumer plastics. This work developed a Bronsted-Lewis acid ionic liquid/polyhydroxy-compound system as a bifunctional reagent for dissolving poly(p-dioxanone) (PPDO) and catalyzing its CRM. The efficiency and selectivity of CRM were improved by preventing the formation of byproducts and achieving almost complete depolymerization in a short time.
Article
Chemistry, Multidisciplinary
Alhulw H. H. Alshammari, Khulaif Alshammari, Turki Alotaibi, Majed Alshammari, Sultan Alhassan, Taha Abdel Mohaymen Taha
Summary: The nanocomposites of S@g-C3N4 and NiS-g-C3N4 with different NiS concentrations were synthesized and characterized. The NiS-g-C3N4 nanocomposites showed increased porosity and improved photocatalytic performance. The highest hydrogen production rate was achieved with the sample containing 1.5 wt.% NiS nanosheet.
Article
Polymer Science
Xiaohong Wang, Jian Jian, Zhengqiu Yuan, Jianxian Zeng, Lei Zhang, Taofen Wang, Hu Zhou
EUROPEAN POLYMER JOURNAL
(2020)
Article
Chemistry, Analytical
Bawa Mbage, Yiming Li, Haipei Si, Xueyan Zhang, Yue Li, Xiaohong Wang, Abdulwahab Salah, Kaizhi Zhang
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Materials Science, Paper & Wood
Xiaohong Wang, Yuguang Sui, Jian Jian, Zhengqiu Yuan, Jianxian Zeng, Lei Zhang, Taofen Wang, Hu Zhou
Article
Environmental Sciences
Jinghui Wu, Siqi Yan, Chi Wang, Chyi-How Lay, Xiaohong Wang, Xianze Wang, Mingxin Huo
Summary: The study demonstrates that efficient conversion of 5-HMF into valuable DFF can be achieved by synthesizing HPMPoV/meso-SiO2-NH2 nanofibers. By adjusting the hydrophilicity of the nanofibers, the selectivity towards DFF can be improved, and good performance in recycling tests is observed.
Article
Nanoscience & Nanotechnology
Jinghui Wu, Hongwei Zheng, Chi Wang, Xianze Wang, Xiaohong Wang, Mingxin Huo
Summary: A peroxo polyoxometalate-based catalyst was used in the epoxidation of olefins with hydrogen peroxide, where it formed an emulsion to promote the reaction before precipitating for easy reuse.
MICRO & NANO LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Qiwen Wang, Ying Li, Hongyu Guan, Hang Yu, Xiaohong Wang
Summary: The catalyst NH4)(5)H6PV8Mo4O40 supported on hydroxyapatite showed efficient catalytic activity for the oxidative conversion of 5-hydroxymethylfurfural to 2,5-diformylfuran. It can also be reused for at least six times with high stability and duration, making it a promising catalyst for cost-saving one-step reactions.
Article
Engineering, Environmental
Yang Huo, Dan Zhang, Jinghui Wu, Xianze Wang, Xiaohong Wang, Changlu Shao, John C. Crittenden, Mingxin Huo
Summary: The study demonstrates the effective degradation of PAEs using POMs/graphene hybrids, with POM molecules embedded onto graphene to form a catalyst for high-efficiency oxidation reactions. The designed HPMoV@Surf(n)/GO(20 wt%) is found to degrade various PAEs, remove over 70% of TOC and COD, and show good removal performance in a wastewater treatment plant.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Zonghang Li, Yiming Li, Yuannan Chen, Qiwen Wang, Mehwish Jadoon, Xiaohu Yi, Xiaozheng Duan, Xiaohong Wang
Summary: Selective breakage of the beta-O-4 bond in lignin is crucial for efficient conversion of lignocellulose. In this study, a novel polyoxometalate (POM) catalyst, H6V2Mo18O62, was developed through the atom-by-atom replacement strategy, which exhibited significantly enhanced activity compared to the original H6P2Mo18O62. By using a deep eutectic solvent as a solidifying agent, BetH(5)V(2)Mo(18) was obtained, which demonstrated controlled acidic/redox ability and thermosensitive ability for mass-transferring. This trinitarian catalyst enabled the full utilization of lignocellulose via temperature-programmed treatment.
Article
Chemistry, Physical
Zonghang Li, Xiaohu Yi, Qiwen Wang, Yiming Li, Diantao Li, Regina Palkovits, Anna Katharina Beine, Chunguang Liu, Xiaohong Wang
Summary: This study achieved the direct conversion of cellulose to glycolic acid (GA) with a high yield of up to 75% using acidic/redox polyoxometalates (POMs) as catalysts in a one-pot reaction. Among the three POMs studied, H3PMo showed the most promising catalytic activity. The reaction pathway involves the activation of O2 and the crucial role of the reduced form [PMo10 VIMo2VO39]5- in GA production.
Article
Chemistry, Inorganic & Nuclear
Hang Yu, Wenwen Bu, Zijia Wang, Zhuoyue Zhao, Mehwish Jadoon, Xiaohong Wang
Summary: Polyoxometalate nanoparticles were successfully synthesized through a solid-state reaction method without the use of a surfactant, demonstrating excellent catalytic oxidative desulfurization performance for refractory sulfur compounds in diesel and gasoline. The coexistence of Ag+ and PMo4V8O4011- played a key role in the CODS process, with Ag+ acting as the electron transfer mediator and PMo4V8O4011- as the electron donor. AgPMo4V8 nanoparticles showed great potential for industrial application, producing ultra-clean oils with S content below 10 ppm under mild reaction conditions.
DALTON TRANSACTIONS
(2021)
Article
Multidisciplinary Sciences
Yue Li, Yiming Li, Xueyan Zhang, Xiaohong Wang
CHINESE SCIENCE BULLETIN-CHINESE
(2020)
Article
Chemistry, Physical
Meilin Tao, Yue Li, Yiming Li, Xueyan Zhang, Yurii V. Geletii, Xiaohong Wang, Craig L. Hill
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Physical
Yue Li, Jian Song, Mengting Jiang, Mbage Bawa, Xiaohong Wang, Yuyang Tian, Guangshan Zhu
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Physical
Ping Cao, Ying Li, Yiming Li, Xueyan Zhang, Xiaohong Wang, Zijiang Jiang
SUSTAINABLE ENERGY & FUELS
(2020)
Article
Chemistry, Physical
Meilin Tao, Ningyue Sun, Yiming Li, Shengtian Wang, Xiaohong Wang
CATALYSIS SCIENCE & TECHNOLOGY
(2020)