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   Articles with "propylene" as a keyword



Kinetics of the Ag/KNO3/CaCO3 Catalyzed Aerobic Propylene Epoxidation and Effects of CO2

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recommendations! Published in 2020 at "ChemCatChem"

DOI: 10.1002/cctc.201902280

Abstract: In this contribution we investigate the aerobic propylene epoxidation over a Ag/KNO3/CaCO3 catalyst. The catalytic performance and surface speciation of the catalyst depends on the concentrations of feed modifiers such as ethyl chloride and nitric… read more here.

Keywords: aerobic propylene; propylene epoxidation; kinetics kno3; kno3 caco3 ... See more keywords

Propylene–Ethylene Copolymer Covalent Adaptable Networks Synthesized by Resonance‐Stabilized, Radical‐Based Reactive Processing with Excellent Elevated‐Temperature Creep Resistance

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recommendations! Published in 2025 at "Chemsuschem"

DOI: 10.1002/cssc.202501137

Abstract: Low‐crystallinity propylene–ethylene copolymer (PEC) thermoplastics exhibit creep in the melt and semicrystalline states. To enhance creep resistance while maintaining reprocessability, dynamic covalent cross‐links are introduced through one‐step, radical‐based reactive processing to create covalent adaptable networks… read more here.

Keywords: resistance; covalent; pec; creep resistance ... See more keywords

Theoretical Investigation of Propylene Epoxidation Using H2 and O2 Over Titanosilicate-Supported Au Catalysts

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recommendations! Published in 2024 at "Catalysis Letters"

DOI: 10.1007/s10562-024-04783-y

Abstract: Titanosilicate-supported Au-cluster catalysts can be used to selectively synthesize propylene oxide from propylene using O2 and H2. However, the details of the catalytic reaction mechanism have not yet been elucidated. Thus, the reaction mechanism was… read more here.

Keywords: reaction; energy; anatase tio2; titanosilicate ... See more keywords

Determination of zinc glutarate complexes synthesis factors affecting production of propylene carbonate from carbon dioxide and propylene oxide

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recommendations! Published in 2017 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2017.06.075

Abstract: Abstract The purpose of this research was to investigate the effects of catalyst preparation temperature and time, and catalyst size in relation to the performance of the zinc glutarate (ZnGA) catalyst and the polypropylene carbonate… read more here.

Keywords: catalyst; temperature; zinc glutarate; propylene oxide ... See more keywords

Liquid-phase epoxidation of propylene with molecular oxygen by chloride manganese meso-tetraphenylporphyrins

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recommendations! Published in 2021 at "Chinese Journal of Chemical Engineering"

DOI: 10.1016/j.cjche.2021.08.006

Abstract: Abstract Propylene molecule owns two active sites, the direct epoxidation of propylene by dioxygen is still a challenge due to the limitation of selectivity. In this work, the direct liquid-phase propylene aerobic epoxidation protocol by… read more here.

Keywords: liquid phase; manganese meso; propylene; epoxidation ... See more keywords

Selective adsorption of ethane, ethylene, propane, and propylene in flammable gas mixtures on different coal samples and implications for fire hazard assessments

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recommendations! Published in 2019 at "International Journal of Coal Geology"

DOI: 10.1016/j.coal.2018.12.003

Abstract: Abstract Sorption studies of gaseous mixtures of ethane, ethylene, propane, and propylene allowed us to obtain a better understanding of flammable gas behavior during flow through a coal seam. The dynamic sorption method was used… read more here.

Keywords: gas; sorption; propylene; flammable gas ... See more keywords
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Influence on properties and phase structure of single gas-phase reactor made impact polypropylene copolymers

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recommendations! Published in 2018 at "European Polymer Journal"

DOI: 10.1016/j.eurpolymj.2018.07.015

Abstract: Abstract Impact polypropylene copolymers (IPC) are materials important for many commercial applications. These materials are usually synthetized by different methods involving two consecutive reactions: in liquid, gas or liquid-gas phase. This work presents a method… read more here.

Keywords: phase; impact polypropylene; gas; gas phase ... See more keywords

Thermo-responsive shape memory effect in isotactic propylene/1-butene copolymers

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recommendations! Published in 2020 at "European Polymer Journal"

DOI: 10.1016/j.eurpolymj.2020.110030

Abstract: Abstract This paper reported a thermo-responsive shape memory effect in common isotactic propylene/1-butene copolymer (iPPBu) synthesized by Ziegler-Natta catalyst. The deformation principle in the copolymer was cold deformation, and the recovery temperature was around 60 °C,… read more here.

Keywords: propylene; memory; shape memory; memory effect ... See more keywords

Tuning the ethylene-to-propylene ratio in methanol-to-olefins catalysis on window-cage type zeolites

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recommendations! Published in 2021 at "Journal of Catalysis"

DOI: 10.1016/j.jcat.2021.01.015

Abstract: Abstract Decreasing inlet methanol partial pressure and methanol space velocity during methanol-to-olefins (MTO) catalysis on HSAPO-34, HSSZ-13, and HSSZ-39 increases cumulative ethylene-to-propylene ratio by a factor of ~2.3x, ~2.4x, and ~2.2x, respectively. The composition of… read more here.

Keywords: methanol; propylene; ethylene propylene; catalysis ... See more keywords

CO2 cycloaddition with propylene oxide to form propylene carbonate on a copper metal-organic framework: A density functional theory study

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recommendations! Published in 2019 at "Molecular Catalysis"

DOI: 10.1016/j.mcat.2018.11.015

Abstract: Abstract Metal-organic frameworks (MOFs) have emerged as unique catalysts for CO2 conversion, but the catalytic mechanism remains elusive. In this study, a density functional theory (DFT) study is reported on CO2 cycloaddition with propylene oxide… read more here.

Keywords: co2 cycloaddition; propylene; study; metal organic ... See more keywords

WITHDRAWN: Aggregates of superfine ZSM-5 crystals: The effect of NaOH on the catalytic performance of methanol to propylene reaction

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recommendations! Published in 2017 at "Microporous and Mesoporous Materials"

DOI: 10.1016/j.micromeso.2016.10.027

Abstract: Abstract Loose aggregates of superfine ZSM-5 crystals (S-ZSM-5) were synthesized by a seed-induced method in the presence of cetyltrimethylammonium bromide (CTAB), characterized by XRD, SEM, N2 adsorption and desorption, XRF, NH3-TPD, 27Al MAS NMR, TG… read more here.

Keywords: seed; superfine zsm; aggregates superfine; zsm crystals ... See more keywords