Synthesis of liquid hydrocarbons enriched with triptane via dimethyl ether conversion over combined catalyst

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.

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Influence of Precursors on the Induction Period and Transition Regime of Dimethyl Ether Conversion to Hydrocarbons over ZSM-5 Catalysts

Industrial & Engineering Chemistry Research ◽

10.1021/acs.iecr.9b03344 ◽

2019 ◽

Vol 58 (36) ◽

pp. 16479-16488 ◽

Cited By ~ 2

Author(s):

Toyin Omojola ◽

Dmitry B. Lukyanov ◽

Nikolay Cherkasov ◽

Vladimir L. Zholobenko ◽

André C. van Veen

Keyword(s):

Induction Period ◽

Dimethyl Ether ◽

Transition Regime ◽

Dimethyl Ether Conversion

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Effects of reaction atmosphere on dimethyl ether conversion to propylene process over Ca/ZSM-5

Journal of Fuel Chemistry and Technology ◽

10.1016/s1872-5813(11)60008-x ◽

2011 ◽

Vol 39 (1) ◽

pp. 42-46 ◽

Cited By ~ 10

Author(s):

Jian-ming MAN ◽

Qing-de ZHANG ◽

Hong-juan XIE ◽

Jun-xuan PAN ◽

Yi-sheng TAN ◽

...

Keyword(s):

Dimethyl Ether ◽

Dimethyl Ether Conversion ◽

Reaction Atmosphere

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Synthesis and characterization of Cu-X/γ-Al2O3 catalyst by intermittent microwave irradiation for hydrogen generation from dimethyl ether steam reforming

Chemical Industry and Chemical Engineering Quarterly ◽

10.2298/ciceq160203029h ◽

2018 ◽

Vol 24 (2) ◽

pp. 169-178

Author(s):

Shilin Huang ◽

Juan Li ◽

Chang-Feng Yan ◽

Zhida Wang ◽

Changqing Guo ◽

...

Keyword(s):

Microwave Irradiation ◽

Dimethyl Ether ◽

Steam Reforming ◽

Hydrogen Generation ◽

Molar Ratio ◽

Hydrogen Yield ◽

Methanol Reforming ◽

Dimethyl Ether Conversion ◽

Shift Reaction ◽

Al2o3 Catalyst

A series of Cu-X/?-Al2O3 (X = Fe, Co, Ni) catalysts were synthesized by a rapid intermittent microwave irradiation method for hydrogen generation from dimethyl ether steam reforming. Different parameters, such as the promoters of X (X = Fe, Co, Ni), microwave irradiation procedure and the ratio of metal to ?-Al2O3, were investigated. The results show that 2Cu-Fe/72?-Al2O3 has the best performance, for which the agglomeration is prevented, CuO is well dispersed and the catalytic activity is improved. Promoter iron oxide in 2Cu-Fe/9?-Al2O3 facilitates the watergas shift reaction, which lead to an increase in the conversion of CO to CO2 and hydrogen yield. Particularly, the 2Cu-Fe/72?-Al2O3 catalyst, with the best molar ratio of metal to ?-Al2O3, shows a dimethyl ether conversion of >99% and a hydrogen yield of >98% and produces the lowest CO content of 1.4%, indicating that the synergism between dimethyl ether hydrolysis and methanol reforming requires an appropriate balance between the metallic Cu-Fe and the acid ?-Al2O3. The intermittent microwave irradiation technique provides a simple but effective method of the Cu-Fe/?-Al2O3 synthesis with a good catalyst performance for the dimethyl ether steam reforming.

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