Results 11 to 20 of about 38,643 (267)

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

Carbonylation of Heterocycles by Homogeneous Catalysts.

ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Tamara L, Church, Yutan D Y L, Getzler, Christopher M, Byrne, Geoffrey W, Coates   +3 more
openaire   +3 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

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

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

Synthesis of poly(itaconic acid) and its application for synthesis of pyrrolinones as a reusable homogeneous catalyst [PDF]

Journal of the Serbian Chemical Society
In this context, poly(itaconic acid) (PIA) was synthesized through the polymerization of itaconic acid in the presence of K2S2O8 and NaH2PO4, achieving satisfactory yields of 80 % within 48 h at 55°C.
Mohamadabad Parya Hamdi, Setamdideh Davood, Ghanbary Fatemeh   +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

Study of Hydrolysis Process from Pineapple Leaf Fibers using Sulfuric Acid, Nitric Acid, and Bentonite Catalysts

Bulletin of Chemical Reaction Engineering & Catalysis, 2021
The hydrolysis process of pineapple leaf fibers has been carried out using sulfuric acid, nitric acid, bentonite catalyst, and activated bentonite catalyst.
Bayu Wiyantoko, Rika Rusitasari, Rahma Novia Putri   +2 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