Effect of magnesium on the catalytic properties of polymetallic zeolite catalysts for conversion of dimethyl ether to light olefins

2020 ◽  
Vol 298 ◽  
pp. 110087 ◽  
Author(s):  
N.V. Kolesnichenko ◽  
Е.N. Khivrich ◽  
T.K. Obukhova ◽  
Т.I. Batova ◽  
G.N. Bondarenko
Keyword(s):  
Dimethyl Ether ◽  
Catalytic Properties ◽  
Zeolite Catalysts ◽  
Light Olefins

Comparison and assessment of zeolite catalysts performance dimethyl ether and light olefins production through methanol: a review

2019 ◽  
Vol 39 (3) ◽  
pp. 157-177 ◽  
Author(s):  
Ehsan Kianfar
Keyword(s):  
Dimethyl Ether ◽  
Raw Materials ◽  
Fixed Bed ◽  
Value Added ◽  
Zeolite Catalysts ◽  
Present Review ◽  
Light Olefins ◽  
Light Olefin ◽  
Production Methods ◽  
Olefin Production

AbstractThe present review focuses on a comparison and assessment of zeolite catalyst performance of dimethyl ether and light olefin production through methanol. Dimethyl ether is a clean fuel which needs diverse processes to be produced. Methanol to dimethyl ether is a very novel process which offers considerable advantages versus additional processes for the production of dimethyl ether. The corresponding fixed-bed reactors compose the most important section of such a process. Production of dimethyl ether by the mentioned process is of high importance since it can be catalytically transferred to a substance with the value of propylene. Furthermore, in case of capability to transfer low-purity methanol into dimethyl ether, less expensive methanol can be consequently achieved with higher value added. In the petrochemical industry, light olefins, for example, ethylene and propylene, can be used as raw materials for the production of polyolefin. The present review aims to produce dimethyl ether in order to reach olefin substances, initially conducting a compressive assessment on production methods of olefin substances.

Complex Catalysts for Direct Synthesis of Dimethyl Ether from Synthesis Gas. Part I: Study of the Catalytic Properties

2013 ◽  
Vol 872 ◽  
pp. 15-22 ◽  
Author(s):  
Natalia I. Kosova ◽  
Pavel Musich ◽  
Irina A. Kurzina ◽  
Alexander Vosmerikov
Keyword(s):  
Dimethyl Ether ◽  
Synthesis Gas ◽  
Catalytic Properties ◽  
Direct Synthesis ◽  
Zeolite Catalysts ◽  
Methanol Dehydration ◽  
Combined Process ◽  
Catalytic Systems ◽  
Synthesis Of Dimethyl Ether

The results of the development of combined process for production of dimethyl ether (CuO/ZnO/Al2O3) and methanol dehydration (γ-Al2O3, zeolite (ZSM-5 type) with a silicate modulus (М) 20, 30, 60, 80, 100, and 200) are presented. The experiments on the influence of the catalysts loading and catalytic conditions were carried out (Р=3 MPa, Н2/СО=2, Т=553 К). It was established that the use of ZSM-5 zeolite catalysts with silicate modulus of 30 allows obtaining the yield of dimethyl ether up to 39%. It was stated that catalytic systems were stable during 180 h.

Efficient Production of Light Olefin Based on Methanol Dehydration: Simulation and Design Improvement

2020 ◽  
Vol 23 ◽  
Author(s):  
S. Majid Abdoli ◽  
Mahsa Kianinia
Keyword(s):  
Dimethyl Ether ◽  
Flow Reactor ◽  
New Technology ◽  
Plug Flow ◽  
Light Olefins ◽  
Efficient Production ◽  
Actual Process ◽  
Light Olefin ◽  
Aspen Hysys ◽  
Improved Design

Background: Ethylene, propylene, and butylene as light olefins are the most important intermediates in the petrochemical industry worldwide. Methanol to olefins (MTO) process is a new technology based on catalytic cracking to produce ethylene and propylene from methanol. Aims and Objective: This study aims to simulate the process of producing ethylene from methanol by using Aspen HYSYS software from the initial design to the improved design. Methods: Ethylene is produced in a two-step reaction. In an equilibrium reactor, the methanol is converted to dimethyl ether by an equilibrium reaction. The conversion of the produced dimethyl ether to ethylene is done in a conversion reactor. Changes have been made to improve the conditions and get closer to the actual process design done in the industry. The plug flow reactor has been replaced by the equilibrium reactor, and the distillation column was employed to separate the dimethyl ether produced from the reactor. Result and Conclusion: The effect of the various parameters on the ethylene production was investigated. Eventually, ethylene is

scholarly journals Solvent-Free Synthesis of SAPO-34 Zeolite with Tunable SiO2/Al2O3 Ratios for Efficient Catalytic Cracking of 1-Butene

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 835
Author(s):  
Xia Xiao ◽  
Zhongliang Xu ◽  
Peng Wang ◽  
Xinfei Liu ◽  
Xiaoqiang Fan ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Acid Sites ◽  
Solvent Free ◽  
Zeolite Catalysts ◽  
Light Olefins ◽  
Molar Ratio ◽  
Coordination Environment ◽  
Starting Mixture ◽  
Synthesis Methodology ◽  
Solvent Free Synthesis

Solvent-free synthesis methodology is a promising technique for the green and sustainable preparation of zeolites materials. In this work, a solvent-free route was developed to synthesize SAPO-34 zeolite. The characterization results indicated that the crystal size, texture properties, acidity and Si coordination environment of the resulting SAPO-34 were tuned by adjusting the SiO2/Al2O3 molar ratio in the starting mixture. Moreover, the acidity of SAPO-34 zeolite was found to depend on the Si coordination environment, which was consistent with that of SAPO-34 zeolite synthesized by the hydrothermal method. At an SiO2/Al2O3 ratio of 0.6, the SP-0.6 sample exhibited the highest conversion of 1-butene (82.8%) and a satisfactory yield of light olefins (51.6%) in the catalytic cracking of 1-butene, which was attributed to the synergistic effect of the large SBET (425 m2/g) and the abundant acid sites (1.82 mmol/g). This work provides a new opportunity for the design of efficient zeolite catalysts for industrially important reactions.

Dimethyl Ether Conversion to Olefins over the SAPO-34/ZrO2 Catalysts: Effect of the ZrO2 Supporter

2011 ◽  
Vol 347-353 ◽  
pp. 3681-3684 ◽  
Author(s):  
Young Ho Kim ◽  
Su Gyung Lee ◽  
Byoung Kwan Yoo ◽  
Han Sol Je ◽  
Chu Sik Park
Keyword(s):  
Physicochemical Properties ◽  
Dimethyl Ether ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Coke Deposition ◽  
Light Olefins ◽  
Similar Activity ◽  
Dimethyl Ether Conversion ◽  
Zro2 Catalyst ◽  
Catalyst Lifetime

A SAPO-34 catalyst is well known to be one of the best catalysts for DME to olefins (DTO) reaction. Main products of the reaction were light olefins such as ethylene, propylene and butenes. However, the main problem is rapid deactivation of the SAPO-34 catalyst due to coke deposition during DTO reaction. In this study, various SAPO-34/ZrO2 catalysts added with ZrO2 were prepared for improving the lifetime and their physicochemical properties have been characterized by XRD and SEM. The DTO reaction over various SAPO-34/ZrO2 catalysts was carried out using a fixed bed reactor. All SAPO-34/ZrO2 catalysts showed similar activity and selectivity in the DTO reaction. The SAPO-34(9wt%)/ZrO2 catalyst was showed the best performance for the catalyst lifetime.

scholarly journals SELECTIVE SYNTHESIS OF LIGHT OLEFINS FROM DIMETHYL ETHER OVER ACIDIC SALTS OF H3PW12O40WITH 1,3,5-TRIAZINE

1982 ◽  
Vol 11 (8) ◽  
pp. 1275-1276 ◽  
Author(s):  
Takuo Hibi ◽  
Toshio Okuhara ◽  
Makoto Misono ◽  
Yukio Yoneda
Keyword(s):  
Dimethyl Ether ◽  
Light Olefins ◽  
Selective Synthesis

Polyol synthesis of non-stoichiometric Mn–Zn ferrite nanocrystals: structural /microstructural characterization and catalytic application

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 65010-65022 ◽  
Author(s):  
Z. Beji ◽  
M. Sun ◽  
L. S. Smiri ◽  
F. Herbst ◽  
C. Mangeney ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Oxidation Reaction ◽  
Catalytic Properties ◽  
Microstructural Characterization ◽  
Ferrite Nanoparticles ◽  
Polyol Synthesis ◽  
Catalytic Application ◽  
Zn Ferrite ◽  
Structure And Microstructure

The structure and microstructure of polyol-made non-stoichiometric Mn–Zn ferrite nanoparticles were successfully investigated and correlated to their catalytic properties toward dimethyl ether oxidation reaction.

Effect of Chemical Composition of Zeolite Catalysts on Their Catalytic Properties in Isobutane Alkylation with Butylenes

2019 ◽  
Vol 59 (7) ◽  
pp. 706-710
Author(s):  
I. M. Gerzeliev ◽  
V. A. Temnikova ◽  
O. V. Deniskin ◽  
M. N. Baskhanova ◽  
D. O. Khusaimova ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Catalytic Properties ◽  
Zeolite Catalysts ◽  
Isobutane Alkylation
Sign in / Sign up

Export Citation Format

Share Document