Methanol promoted naphtha catalytic pyrolysis to light olefins on Zn-modified high-silicon HZSM-5 zeolite catalysts

Exploring the relationship between the properties and catalytic reactivity of the Zn-modified high-silicon ZSM-5 in the methanol/naphtha coupling reaction and achieving the efficient utilization of naphtha.

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Regulating light olefins or aromatics production in ex-situ catalytic pyrolysis of biomass by engineering the structure of tin modified ZSM-5 catalyst

Bioresource Technology ◽

10.1016/j.biortech.2021.124975 ◽

2021 ◽

pp. 124975

Author(s):

Jingyuan Shang ◽

Guangbin Fu ◽

Zhenping Cai ◽

Xiang Feng ◽

Yongxiao Tuo ◽

...

Keyword(s):

Catalytic Pyrolysis ◽

Ex Situ ◽

Light Olefins ◽

Pyrolysis Of Biomass

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

Catalysts ◽

10.3390/catal11070835 ◽

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.

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Catalytic reactivity of the complexes [Pd{(Ph2P)2N( Bu)-P,P´}X2], X = Cl, Br, I, in the Suzuki-Miyaura C−C coupling reaction: Probing effects of the halogeno ligand X− and the ligand's Bu group

Journal of Organometallic Chemistry ◽

10.1016/j.jorganchem.2018.10.006 ◽

2019 ◽

Vol 879 ◽

pp. 40-46

Author(s):

Polydoros-Chrysovalantis Ioannou ◽

Cécile Arbez-Gindre ◽

Maria Zoumpanioti ◽

Catherine P. Raptopoulou ◽

Vassilis Psycharis ◽

...

Keyword(s):

Coupling Reaction ◽

Catalytic Reactivity

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

Microporous and Mesoporous Materials ◽

10.1016/j.micromeso.2020.110087 ◽

2020 ◽

Vol 298 ◽

pp. 110087 ◽

Cited By ~ 1

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

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

Reviews in Inorganic Chemistry ◽

10.1515/revic-2019-0001 ◽

2019 ◽

Vol 39 (3) ◽

pp. 157-177 ◽

Cited By ~ 12

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.

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