Results 91 to 100 of about 5,339 (237)

The Stronger the Better: Donor Substituents Push Catalytic Activity of Molecular Chromium Olefin Polymerization Catalysts. [PDF]

Chemistry, 2021
Hansen HB, Wadepohl H, Enders M.
europepmc   +1 more source

Ancillary ligand effects on α-olefin polymerization catalyzed by zirconium metallocene: a computational study. [PDF]

RSC Adv, 2022
Zhao Y, Xu X, Wang Y, Liu T, Li H, Zhang Y, Wang L, Wang X, Zhao S, Luo Y.   +9 more
europepmc   +1 more source

Advanced Separation Technologies for Light Olefin and Alkane (C2‐C4): Recent Advances in Extraction, Adsorption, and Membrane Separation

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT With the rapid development of the petrochemical industry, efficient separation technology for olefins and alkanes with the same number of carbon atoms has become an important research topic to enhance the efficiency of petroleum resource utilization and optimize product quality.
Shasha Zhao, Kang Zhao, Zhen Liu
wiley   +1 more source

Synthesis of Block Copolymers Utilizing Alkoxycarbonylation or Aminocarbonylation of Growing Chain End in Pd‐Catalyzed Living Polymerization of Olefins

Macromolecular Materials and Engineering
Diimine Pd catalysts have been known to promote the living polymerization of olefins. Treatment of the living polyolefin with carbon monoxide followed by the addition of alcohols or amines results in alkoxycarbonylation or aminocarbonylation of the ...
Daisuke Takeuchi, Kohsuke Ohta, Yuta Kimura   +2 more
doaj   +1 more source

Thermal Black‐Infused Polyurethane Rigid Foams: Novel Formulations Toward Higher‐Performance and More Sustainable Insulation

Journal of Applied Polymer Science, EarlyView.
Thermal black improves polyurethane foam structure and stability. It helps the foam rise smoothly while promoting the formation of smaller, more uniform cells. The foam keeps its strength and insulation performance while reducing shrinkage. Its clean production and easy processing make it a sustainable, cost‐effective option for high‐performance ...
Mihaela Mihai, Adrien Faye, Sajjad Saeidlou, Edward Norton   +3 more
wiley   +1 more source

High‐performance tetrahedral palladium nanocatalyst for microwave‐assisted organic synthesis

Bulletin of the Korean Chemical Society, EarlyView.
Tetrahedral palladium nanoparticles anchored on graphene sheets (T‐Pd/graphene) were synthesized through a solvent‐free process involving thermal decomposition in an environment rich in carbon monoxide at elevated temperatures and have high catalytic activity for organic chemistry reactions. Abstract Palladium is widely recognized for its effectiveness
Dicky Annas, Kyung Hee Oh, Muthuchamy Nallal, Hack‐Keun Lee, Shin Wook Kang, Kwonho Jang, Jun‐Hyun Kim, Hyun Sung Kim, Ji Chan Park, Kang Hyun Park   +9 more
wiley   +1 more source

Olefin polymerization catalysts

Polimery, 2002
Polyolefins, which are products of polymerisation of unsaturated hydrocarbons of the olefin series, have a molecular weight in the range from several thousands to several millions. Depending on the type of monomer and method and mechanism of polymerisation the resulting polyolefins may differ in their structure and molecular weight.
openaire   +1 more source

Insight of Elementary Steps on the Polyethylene and Polypropylene Co‐Pyrolysis

Carbon and Hydrogen, EarlyView.
Pyrolysis of PP initiates first, accelerating PE cracking via secondary radical transfer, leading to n‐hydrocarbon yield enhancement. Py–GC/MS and nanoreactor computation are in agreement on the elementary step proposal. ABSTRACT Pyrolysis with gas chromatography & mass spectrometry (Py–GC/MS) technique was employed to analyze the yield variation of ...
Naiwen Xu, Liang Zou, Na Hua, Chao Xu, Zhenggang Lan, Qi Ou, Bo Peng   +6 more
wiley   +1 more source

New Method for Online Observation of Growing Polyolefin Particles

CHIMIA, 2001
In classical experimental research work on catalytic olefin polymerization, kinetics and powder properties are always determined as an average value over a large number of polymer particles.
Jochem T.M. Pater, Günter Weickert, Wim P.M. van Swaaij   +2 more
doaj   +2 more sources

Electrothermal Strategies for Upcycling Commodity Plastics

Carbon and Hydrogen, EarlyView.
Future development directions for electrothermal plastic upcycling. (1) Advanced catalyst design and in situ technology development; (2) AI‐assisted reaction process control and catalyst development; (3) Reactor scale‐up and optimization for real‐world plastic feedstock processing; and (4) Integration with renewable electricity and distributed energy ...
Zhe Wang, Chaoping Xu, Zhengwu Yang, Haoyu Yan, Yuming Gao, Jianing Guo, Songbo Yang, Han Hao, Jianhong Gong, Hongsheng Liu, Bo Jiang   +10 more
wiley   +1 more source