Results 21 to 30 of about 190,133 (313)

The Influence of Comonomer on Ethylene/α-Olefin Copolymers Prepared Using [Bis(N-(3-tert butylsalicylidene)anilinato)] Titanium (IV) Dichloride Complex

Molecules, 2011
We describe the synthesis of [bis(N-(3-tert-butylsalicylidene)anilinato)] titanium (IV) dichloride (Ti-FI complex) and examine the effects of comonomer (feed concentration and type) on its catalytic performance and properties of the resulting polymers ...
Patcharaporn Kaivalchatchawal, Pattiya Suttipitakwong, Sutheerawat Samingprai, Piyasan Praserthdam, Bunjerd Jongsomjit   +4 more
doaj   +1 more source

Synthesis of Metallocene Catalyst for Terpolymerization of Ethylene, Propylene and Diene [PDF]

علوم و تکنولوژی پلیمر, 2014
The bis(indenyl) zirconium dichloride catalyst was synthesized by a modified method at room temperature. Terpolymerization of ethylene, propylene and diene monomers were carried out using this metallocene catalyst under different conditions of different ...
S.M.M. Mortazavi, S. Ahmadjo, M. Nekoomanesh, A. Arabi, Gholamhossein Zohuri   +4 more
doaj   +1 more source

Water splitting with polyoxometalate-treated photoanodes: Enhancing performance through sensitizer design [PDF]

, 2015
Visible light driven water oxidation has been demonstrated at near-neutral pH using photoanodes based on nanoporous films of TiO2, polyoxometalate (POM) water oxidation catalyst [{Ru4O4(OH)2(H2O)4}(γ-SiW10O36)2]10- (1), and both known photosensitizer [Ru(
Al-Oweini, Alibabaei, Anderson, Anwar, Asbury, Asbury, Ashford, Ashford, Becke, Becke, Besson, Betley, Binstead, Brimblecombe, Brimblecombe, Cammi, Cao, Chen, Concepcion, Creutz, Dare-Edwards, Dolbecq, Duan, Duan, Duan, Duonghong, Eisenberg, Ernstorfer, Ettedgui, Fay, Gao, Gardner, Geletii, Geletii, Geletii, Ghosh, Goberna-Ferrón, Guo, Guo, Hagfeldt, Hanson, Hanson, Hanson, Hay, Hay, Heimer, Huang, Huang, Huang, Hull, Hurst, Hurst, Jiao, Juris, Juris, Keyes, Kuznetsov, Lapides, Lee, Lee, Li, Li, Liu, Lv, Lv, Lv, Maheswari, Masaoka, McDaniel, Memming, Memming, Moore, Muckerman, Nakamura, Natali, Nocera, Orlandi, Park, Proust, Puntoriero, Rice, Sala, Sartorel, Sartorel, Seery, Seery, Snoeberger, Song, Song, Song, Song, Soriano-López, Stockwell, Sumliner, Toma, Tomasi, Trachibana, Vannucci, Vickers, Wadt, Wee, Wu, Xiang, Yagi, Yam, Yin, Youngblood, Youngblood, Zhao, Zhu, Zong   +110 more
core   +1 more source

Electrochemical recycling of homogeneous catalysts

Science Advances, 2022
Homogeneous catalysts have rapid kinetics and keen reaction selectivity. However, their widespread use for industrial catalysis has remained limited because of challenges in reusability. Here, we propose a redox-mediated electrochemical approach for catalyst recycling using metallopolymer-functionalized electrodes for binding and release ...
Stephen Cotty, Jemin Jeon, Johannes Elbert, Vijaya Sundar Jeyaraj, Alexander V. Mironenko, Xiao Su   +5 more
openaire   +2 more sources

Biodiesel preparation from Camelina sativa oil by homogeneous and heterogeneous transesterification [PDF]

E3S Web of Conferences
Biodiesel is one of the possible alternatives to diesel fuel to address the issue of fossil fuels and their impact on the environment. Substituting homogeneous transesterification with heterogeneous offers advantages such as improved catalyst and product
Bérešová Miroslava, Peller András, Horňáček Michal   +2 more
doaj   +1 more source

Structure-dependence and metal-dependence on atomically dispersed Ir catalysts for efficient n-butane dehydrogenation

Nature Communications, 2023
Single-site pincer-ligated iridium complexes exhibit the ability for C-H activation in homogeneous catalysis. However, instability and difficulty in catalyst recycling are inherent disadvantages of the homogeneous catalyst, limiting its development. Here,
Xiaowen Chen, Xuetao Qin, Yueyue Jiao, Mi Peng, Jiangyong Diao, Pengju Ren, Chengyu Li, Dequan Xiao, Xiaodong Wen, Zheng Jiang, Ning Wang, Xiangbin Cai, Hongyang Liu, Ding Ma   +13 more
doaj   +1 more source

Preparation of Co-porphyrin catalyst encapsulated in cyclodextrin-based metal-organic framework for coupling reaction [PDF]

E3S Web of Conferences, 2021
Immobilization of organometallic catalyst were attempted by using cyclodextrin-based metal-organic framework (CD-MOF) with the characteristic nanoporous structure.
Nagai A, Hontake T, Abe Y, Michida W, Inokawa H., Sakuragi M, Okobira T., Guan G, Kusakabe K   +8 more
doaj   +1 more source

Observation of Different Catalytic Activity of Various 1-Olefins during Ethylene/1-Olefin Copolymerization with Homogeneous Metallocene Catalysts

Molecules, 2011
This research aimed to investigate the copolymerization of ethylene and various 1-olefins. The comonomer lengths were varied from 1-hexene (1-C6) up to 1-octadecene (1-C18) in order to study the effect of comonomer chain length on the activity and ...
Mingkwan Wannaborworn, Bunjerd Jongsomjit, Piyasan Praserthdam   +2 more
doaj   +1 more source

Spatial Control over Catalyst Positioning for Increased Micromotor Efficiency

Gels, 2023
Motion is influenced by many different aspects of a micromotor’s design, such as shape, roughness and the type of materials used. When designing a motor, asymmetry is the main requirement to take into account, either in shape or in catalyst distribution.
Shauni Keller, Serena P. Teora, Arif Keskin, Luuk J. C. Daris, Norman A. P. E. Samuels, Moussa Boujemaa, Daniela A. Wilson   +6 more
doaj   +1 more source

Cooperative catalysis by silica-supported organic functional groups [PDF]

, 2008
Hybrid inorganic–organic materials comprising organic functional groups tethered from silica surfaces are versatile, heterogeneous catalysts. Recent advances have led to the preparation of silica materials containing multiple, different functional groups
Davis, Mark E., Margelefsky, Eric L., Zeidan, Ryan K.   +2 more
core   +1 more source