Article
Chemistry, Multidisciplinary
Yosi Kratish, Tobin J. Marks
Summary: Using a mechanism-based solvent-free tandem catalytic approach, commodity polyester plastics such as PET, PBT, and PEN can be rapidly and selectively deconstructed to terephthalic acid or naphthalene dicarboxylic acid and ethane or butane, with essentially quantitative yield. The process is effective for both laboratory grade and waste plastics, while co-mingled polypropylene remains unchanged.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yangjian Quan, Guangxu Lan, Wenjie Shi, Ziwan Xu, Yingjie Fan, Eric You, Xiaomin Jiang, Cheng Wang, Wenbin Lin
Summary: The study introduced the design of a bifunctional metal-organic layer (MOL) combining a photosensitizer and a hydrogen-transfer catalyst, which efficiently catalyzed acceptorless dehydrogenation reactions of indolines and tetrahydroquinolines, as well as dehydrogenative tandem transformations of indolines with alkenes or aldehydes. With the potential of MOLs in constructing novel multifunctional heterogeneous catalysts demonstrated, this research contributes to the development of catalytic systems for organic transformations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Junjie Zhang, Xueying Wu, Jiazhi Chen, Xi Wang, Yuliang Mai
Summary: Researchers have developed a highly efficient Cu-Cu2O@NC catalyst for the dehydrogenation of glycerol to lactic acid under high temperature aqueous conditions. The catalyst exhibited high conversion and selectivity, as well as excellent stability and reusability.
Article
Biochemistry & Molecular Biology
M. Victoria Jimenez, Ana Ojeda-Amador, Raquel Puerta-Oteo, Joaquin Martinez-Sal, Vincenzo Passarelli, Jesus J. Perez-Torrente
Summary: Iridium(I) compounds with bridge-functionalized bis-NHC ligands were prepared and showed high activity and selectivity in the oxidative dehydrogenation of glycerol to lactate. The hydroxy-functionalized bis-NHC catalysts were more active than the carboxylate-functionalized ones and the unbridged bis-NHC iridium(I) catalyst.
Article
Chemistry, Physical
Yiyun Wang, Congming Tang, Kai Ma, Xinli Li
Summary: Sustainable production of pyruvic acid was investigated using MoO3 catalyst, and it was found that the crystal phase of MoO3 plays a crucial role in the reactivity. h-MoO3 exhibits better activity than alpha-MoO3 due to its lower absorption energy for lactic acid and lower activation energy. The higher binding energy and valence band value of h-MoO3 also contribute to its stronger oxidative ability. This work provides a novel strategy for achieving sustainable production of pyruvic acid through crystal phase-mediated reactivity.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Atal Shivhare, Deshetti Jampaiah, Suresh K. Bhargava, Adam F. Lee, Rajendra Srivastava, Karen Wilson
Summary: Global temperature rise has led to adverse climate impacts, mainly due to anthropogenic greenhouse gas emissions; Lignin, a renewable resource, can replace aromatic hydrocarbons from fossil sources; Hydrogenolysis reaction has gained significant attention as an effective way for cleavage of lignin-derived aromatic ethers.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Shizhuo Wang, Jikang Jiang, Minyan Gu, Feng Gao, Zheng Shen
Summary: An efficient Pt/deAl-beta@Mg(OH)2 catalyst was designed and used to produce 1,2-propanediol (1,2-PDO) from sucrose. The optimized conditions resulted in a yield of 33.5% 1,2-PDO. The modified beta zeolite with a core-shell structure showed good stability, maintaining a yield of over 30% after three cycles of reuse. Dealuminated zeolite increased the acid sites, while Pt loading enhanced the distribution of acid sites and improved the shape selectivity of the catalyst. The introduction of alkali inhibited side reactions and increased product yield. These modifications promoted the production of 1,2-PDO, providing a theoretical basis and reference for biomass conversion technology in practical production.
Article
Chemistry, Physical
Yueyue Li, Ruonan Wang, Bowen Huang, Liangliang Zhang, Xuran Ma, Shikun Zhang, Zhiguo Zhu, Hongying Lu, Kaixuan Yang
Summary: This study reported an efficient catalyst for the conversion of HMF to high-value-added chemical DMF. The catalyst showed excellent stability and reusability, and achieved selective conversion of HMF by modulating the electronic structure of nickel. Furthermore, the synergy between acid-base sites and indium played a crucial role in the catalytic process.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Himani Narjinari, Sunil Dhole, Akshai Kumar
Summary: This study reports the dehydrogenation of glycerol to lactic acid using the base metal salt CoCl2 as a catalyst under both acceptorless and transfer dehydrogenation conditions. The results show that this catalyst can efficiently and selectively produce lactic acid from glycerol, with acetone serving as a sacrificial hydrogen acceptor playing a crucial role in the reaction.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Yongwoo Kim, Hwangho Lee, Seungdo Yang, Jaeha Lee, Hyungjoo Kim, Sungha Hwang, Se Won Jeon, Do Heui Kim
Summary: By rationally designing a catalyst structure, ultrafine Pd nanoparticles supported on carbon nanotubes were successfully synthesized, significantly enhancing the activity of the formic acid dehydrogenation reaction.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Lujie Liu, Takehiro Asano, Yoshinao Nakagawa, Minyan Gu, Congcong Li, Masazumi Tamura, Keiichi Tomishige
Summary: By optimizing the amount of W and in the presence of water, the WOx species in the Pt-WOx/SiO2 catalyst act as active sites at the Pt-WOx interface, facilitating the dissociation of the C-O bond.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Multidisciplinary
Jian Guo, Chengkai K. Yin, Dulin L. Zhong, Yilin L. Wang, Tiangui Qi, Guihua H. Liu, Leiting T. Shen, Qiusheng S. Zhou, Zhihong H. Peng, Hong Yao, Xiaobin B. Li
Summary: This review discusses the potential of hydrogen as an energy carrier for renewable energy, particularly in on-board hydrogen fuel cells. It also highlights the limitations of mainstream hydrogen storage techniques for vehicle applications, as well as the significant potential of formic acid in hydrogen generation.
Article
Chemistry, Multidisciplinary
Mingxing Ye, Yurou Li, Zhirong Yang, Chang Yao, Weixiao Sun, Xiangxue Zhang, Wenyao Chen, Gang Qian, Xuezhi Duan, Yueqiang Cao, Lina Li, Xinggui Zhou, Jing Zhang
Summary: By tuning the Ru coordination environment, selective control of the production of benzene, toluene, and xylene (BTX) through hydrogenolysis of polyethylene terephthalate (PET) was achieved. The study revealed that a Ru/TiO2 catalyst with a Ru coordination number of ca. 5.0, where edge/corner sites are dominant, resulted in a BTX yield of 77%, while a catalyst primarily composed of terrace sites led to the formation of more gas and saturated products. The research also showed that under-coordinated Ru edge sites favor upright adsorption of aromatic adsorbates, mitigating ring hydrogenation and opening.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Jing Xu, Zonghui Liu, Yali Zhou, Rui Fu, Zhe Wen, Bing Yan, Bing Xue
Summary: The oxidation of biomass-derived alkyl lactate to alkyl pyruvate using VxOy/SBA-15 catalysts was studied. It was found that the conversion of ethyl lactate increased with the increase of vanadium loading, while the selectivity to ethyl pyruvate remained above 95%. The catalysts were characterized and their structure-activity relationships were analyzed, and a possible catalytic mechanism was proposed.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Jing Xu, Zonghui Liu, Yali Zhou, Rui Fu, Zhe Wen, Bing Yan, Bing Xue
Summary: The oxidation of biomass-derived alkyl lactate to alkyl pyruvate over a solid catalyst is studied. VxOy/SBA-15 catalysts with varying vanadium loading are prepared and characterized. The EL conversion increases with the increase of vanadium loading, while the selectivity to EP remains high. The structure-activity relationships and catalytic mechanism are analyzed.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
