Results 21 to 30 of about 108,985 (236)

Cation-exchange resins as heterogeneous catalysts for the synthesis of 1,3-butadiene from propylene and formaldehyde

open access: yesChimica Techno Acta, 2021
The possibility of using the cation-exchange resin Lewatit K2420 as a catalyst for the synthesis of 1,3-butadiene from isopropyl alcohol and formaldehyde solution in one technological stage has been shown.
T. M. Kutuzova   +2 more
doaj   +1 more source

Simulation and Optimization of Depropanizer Using Hysys Simulation Package [PDF]

open access: yesEngineering and Technology Journal, 2013
A new depropanizer is designed for the revamped petrochemical complex PC1 in Basrah. Conventional fractionation column is used to match the design of the existing plant.
Nidhal M. Abdul Razzak Al-Azzawi
doaj   +1 more source

Grand Canonical Monte Carlo Simulations of Ethanol Conversion to Propylene Over Zeolite Catalysts

open access: yesFrontiers in Materials, 2018
The transformation of ethanol to propylene (ETP) was investigated over H-ZSM-5 (40) and H-LEV (40) catalysts. For H-ZSM-5 (40), the propylene yield kept constant at about 20.0% during 8 h.
Fangfang Wang   +5 more
doaj   +1 more source

Catalytic Behavior of Chromium Oxide Supported on Nanocasting-Prepared Mesoporous Alumina in Dehydrogenation of Propane

open access: yesNanomaterials, 2017
Mesoporous alumina with narrow pore size distribution centered in the range of 4.4–5.0 nm and with a specific surface area as high as 270 m2·g−1 was prepared via the nanocasting approach using a CMK-3 carbon replica as a hard template.
Adam Węgrzyniak   +5 more
doaj   +1 more source

Time to failure prediction in rubber components subjected to thermal ageing: A combined approach based upon the intrinsic defect concept and the fracture mechanics [PDF]

open access: yes, 2014
In this contribution, we attempt to derive a tool allowing the prediction of the stretch ratioat failure in rubber components subjected to thermal ageing.
NAÏT-ABDELAZIZ, M   +10 more
core   +1 more source

Experimental investigation of benzene alkylation in benzene cut by propylene over ZSM-5 zeolite as catalyst [PDF]

open access: yesشیمی کاربردی روز, 2014
Alkylation of benzene content in benzene cut produced by Iranian petrochemical company over ZSM-5 zeolite as catalyst was investigated in three phase reactor. In this work, the effects of operating temperatures (140, 170 and 200°C) and benzene/propylene
Jafar Mahmoudi   +2 more
doaj   +1 more source

Coadsorption Model for First-Principle Description of Roles of Donors in Heterogeneous Ziegler-Natta Propylene Polymerization [PDF]

open access: yes, 2012
Systematic periodic density functional calculations were conducted to clarify the mechanism for donors to exert steric and electronics influences on propylene polymerization using heterogeneous Ziegler–Natta catalysts.
Taniike, Toshiaki, Terano, Minoru
core   +1 more source

Application of Pd-Based Membrane Reactors: An Industrial Perspective

open access: yesMembranes, 2018
The development of a chemical industry characterized by resource efficiency, in particular with reference to energy use, is becoming a major issue and driver for the achievement of a sustainable chemical production.
Emma Palo   +5 more
doaj   +1 more source

TEA/MOR Mixed Template Synthesis of Nanostructured SAPO-34 Molecular Sieve with Various Ratios Used in Conversion of Methanol to Ethylene and Propylene [PDF]

open access: yesشیمی کاربردی روز, 2013
 The nanostructured silicoaluminophosphate, SAPO-34, was reported to be the most promising catalyst. It is well-recognized that template plays important roles in the synthesis of molecular sieves. In this research, TEA and morpholine mixtures as organic
Tayebeh Souri   +2 more
doaj   +1 more source

Spectral absorbtance of gaseous propylene

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2017
Discusses the results of experimental studies of the function of the spectral transmittance of propylene at high pressures and temperatures.
D. V. Kosenkov   +2 more
doaj   +1 more source

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