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Showing 81-100 of 10,000 results
  1. A heterogeneous Cu-catalyst immobilized on poly(3-carboxythiophene)-modified multi-walled carbon nanotubes for click reaction

    Copper was anchored on poly[3-(carboxypropyl)thiophene-2,5-diyl]-modified multi-walled carbon nanotubes. The resulting novel catalytic platform...

    Soo-Jung Kwak, Ueon Sang Shin, Seung-Hoi Kim in Journal of Chemical Sciences
    Article 04 February 2023
  2. Application of Parallel Difference Tests to Resolve the Axial Activation–Deactivation Profile of Copper–Zinc Oxide Catalyst During Hydrogenation of Methyl Acetate

    The deactivation of a copper–zinc oxide catalyst has been studied in a set of parallel tests which covered a range of space-times with equal flow and...

    John Birtill, Jon Deeley, Craig Bailey in Topics in Catalysis
    Article Open access 18 August 2021
  3. The role of Cu1–O3 species in single-atom Cu/ZrO2 catalyst for CO2 hydrogenation

    Copper-based catalysts for the hydrogenation of CO 2 to methanol have attracted much interest. The complex nature of these catalysts, however, renders...

    Huibo Zhao, Ruofan Yu, ... Li Tan in Nature Catalysis
    Article 15 September 2022
  4. Copper-catalyzed asymmetric dearomatizing amination of 2-naphthols: Csp2–N coupling via 1,3-reductive elimination

    An efficient catalytic asymmetric dearomatizing amination of 2-naphthols and phenols catalyzed by N,N ′-dioxide-copper(I) complex as a chiral catalyst...

    Aying Yihuo, Mao** Pu, ... **aoming Feng in Science China Chemistry
    Article 02 July 2024
  5. Copper immobilized on biomimetic assembled calcium carbonate/carboxymethylcellulose hybrid: a highly active recoverable catalyst for CuAAC reactions

    A novel copper immobilized on biomimetic assembled carboxymethylcellulose/calcium carbonate hybrid (Cu II @CMC/CaCO 3 ) as an efficient heterogeneous...

    Mingjuan Zhang, **xi Xu, ... Yiqun Li in Research on Chemical Intermediates
    Article 04 May 2021
  6. Copper-catalysed difluorocarbene transfer enables modular synthesis

    The use of metal catalysts to produce and control the reactivity of carbenes has long offered a powerful approach to organic synthesis; however,...

    **n Zeng, Yao Li, ... **ngang Zhang in Nature Chemistry
    Article 12 June 2023
  7. Influence of Pore Structure of Silica Coated on Copper-Zinc Oxide-Based Catalyst for Carbon Dioxide into Methanol

    The present work has investigated influence of pore structure of silica coated on copper-zinc oxide-based catalyst for hydrogenation of carbon...

    Tetsuo Umegaki, Yoshiyuki Kojima, Kohji Omata in Topics in Catalysis
    Article 03 April 2021
  8. Efficient and Convenient Transformation of CO2 into α‑Alkylidene Cyclic Carbonates over Reusable and Heterogeneous Cu-MCM-41 Supported Ionic Liquid Catalyst

    The efficient conversion of CO 2 into value-added chemicals is of great importance. Herein, a type of transition metal-doped MCM-41 supported ionic...

    Yu Lin Hu, Chen Chen, ... Qiu Yun Zhang in Silicon
    Article 29 September 2023
  9. Polymer Supported Ferric Chloride as Heterogeneous Catalyst for Three Component Biginelli Reaction

    Polymer supported ferric chloride catalyst is prepared and characterized by IR, SEM, TEM, EDS, TGA, ICP-MS and XRD. The heterogenized Lewis acid...

    Akash V. Gujarati, Ashutosh V. Bedekar, ... Divyesh K. Patel in Catalysis Letters
    Article 08 March 2024
  10. CNTs-promoted Co-Cu Catalyst for Efficient Synthesis of Cinnamyl Alcohol from Hydrogenation of Cinnamaldehyde

    With types of in-house-synthesized multi-walled carbon nanotubes (CNTs), highly active CNT-promoted Co-Cu catalysts, symbolized as Co i Cu j - x %CNTs...

    **n Dong, Cheng Liu, Zhaohui Zhou in Chemical Research in Chinese Universities
    Article 02 July 2024
  11. Trimetallic catalyst, prepared by ultrasonic -impregnation method for selective hydrogenation of acetylene: investigation of potassium addition to Fe-Pd/α-Al2O3 catalyst

    Trimetallic Fe-Pd-K/α-Al 2 O 3 catalyst by using ultrasonic impregnation method and adding potassium to bimetallic Fe-Pd/α-Al 2 O 3 catalyst was...

    Mahmood Roostaiy Ghalehnooiy, Reza Golhosseini, Alireza Mohammadrezaei in Reaction Kinetics, Mechanisms and Catalysis
    Article 27 July 2023
  12. Targeted Degradation of a Heterogeneous Catalyst for Removal of Sulfamethoxazole from Wastewater

    Metal-organic frameworks (MOFs) have alow activation efficiency of PS, which seriously hinders their catalytic applications in advanced oxidation...

    Han Zhao, Yongwen Ma in Catalysis Letters
    Article 04 November 2022
  13. The Regulation of Surface Copper Species Coupled with Ammonia-Evaporation and Hydrothermal Aging Process to Enhance Catalytic Hydrogenation Properties of Cu–SiO2 Catalysts

    The ammonia-evaporation method is one of the most commonly methods for preparing Cu–SiO 2 catalysts, and the improvement of this method is desirable....

    Peng Zhang, Long Huang, ... Yuan-Gen Yao in Catalysis Letters
    Article 25 May 2023
  14. Construction of Fe3O4@BTH-Pyr-CuCl nanocomposite as a highly active magnetically reusable catalyst for arylation of a category of heterocycles

    C–H arylation of heterocyclic compounds is a very interesting and important research field in chemistry for the formation of C–C bonds, but...

    **gming Zhao, Xudong Luo, ... Li-Yuan Chang in Research on Chemical Intermediates
    Article 14 March 2024
  15. Base-Free Aerobic Oxidation of Primary Alcohols to Aldehydes Catalyzed by 1,1-Di(pyridin-2-yl)urea-Functionalized SBA-15- Immobilized Copper(I) Iodide Complex

    A highly efficient, heterogeneous copper(I)-catalyzed aerobic oxidation of primary aliphatic, allylic, propargylic and benzylic alcohols to aldehydes...

    Yan Wang, Chengkai Luo, ... Bin Huang in Catalysis Letters
    Article 06 July 2023
  16. Effect of Microwave Drying of Alumina Support on Properties of Cu/Al2O3 Catalyst for Synthesis of Dimethyl Ether via CO2 Hydrogenation

    Carbon dioxide (CO 2 ) hydrogenation is an alternative catalytic reaction for the conversion of CO 2 into methanol and dimethyl ether (DME). Alumina is...

    Nattawut Nintao, Praeploy Chadawong, ... Chalida Niamnuy in Topics in Catalysis
    Article 09 August 2023
  17. Effect of a High Thermal Capacitance Core–Shell Structure on Co-Ru/SiO2 Catalyst for Low Temperature Fischer–Tropsch Synthesis

    C ommercial cylindrical mesoporous silica pellets (3 mm diameter by 3–6 mm length) were modified by coring the pellets and inserting a 1 mm diameter...

    Pawarat Bootpakdeetam, Frederick M. MacDonnell, Brian H. Dennis in Topics in Catalysis
    Article 21 March 2023
  18. Preparation of porous silica microspheres using silica nanoparticles with different morphologies and their properties as catalyst carriers

    The application of porous silica microspheres in the field of materials has made a breakthrough because of its unique properties. Nevertheless, owing...

    Caixia Ma, **g Hu, ... Xue Li in Journal of Porous Materials
    Article 10 October 2023
  19. Catalytic Transfer Hydrogenation of Levulinate Ester into γ-Valerolactone Over Ternary Cu/ZnO/Al2O3 Catalyst

    An effective catalytic transfer hydrogenation (CTH) process of bio-based levulinate esters into γ-valerolactone (GVL) was explored over ternary...
    Chapter 2023
  20. Regeneration of the Slurry-Phase Hydroconversion Catalyst Precursor

    Abstract

    The relationships of the two-step regeneration of the slurry-phase hydroconversion catalyst separated as a component of a solid powder from...

    M. Ya. Visaliev, A. U. Dandaev, ... Kh. M. Kadiev in Petroleum Chemistry
    Article 01 October 2023
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