INFLUENCE OF VARIOUS TYPES OF ZEOLITIC SUPPORTS ON CATALYTIC PROPERTIES AND PERFORMANCE OF CR-BASED NANOCATALYSTS USED IN C2H6/CO2 OXIDATIVE DEHYDROGENATION PROCESS

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RAHMANI FARHAD; HAGHIGHI MOHAMMAD

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Journal: Nashrieh Shimi va Mohandesi Shimi Iran Year:2017 | Volume:36 | Issue:1 Page(s): 65-81

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Title

INFLUENCE OF VARIOUS TYPES OF ZEOLITIC SUPPORTS ON CATALYTIC PROPERTIES AND PERFORMANCE OF CR-BASED NANOCATALYSTS USED IN C2H6/CO2 OXIDATIVE DEHYDROGENATION PROCESS

Author(s)

RAHMANI FARHAD | HAGHIGHI MOHAMMAD | Issue Writer Certificate

Keywords

ZEOLITIC SUPPORED NANOCATALYSTQ1

OXIDATIVE DEHYDROGENATIONQ1

ETHANEQ1

ETHYLENEQ2

CARBON DIOXIDEQ2

Abstract

confirmed by FESEM images. The TPD-NH3 results revealed that more desirable acidic properties were obtained by employing clinoptilolite compared to other zeolitic supports, resulting in high stability. Based on the EDX results, a higher dispersion of chromium species could be achieved using synthetic supports especially HZSM-5 due to their much higher specific surface area. This reflects in the higher content of redox Cr species stabilized in comparison with SAPO-34 and clinoptilolite, which alongside homogenous and fine surface nanoparticles and fewer agglomerations account for the superior catalytic performance of Cr/ZSM-5. Based on the characterization results, the low surface area of clinoptilolite and low dispersion of Cr species in Cr/Clinoptilolite and surface coverage and micropore blockage in Cr/SAPO-34 are mainly responsible for low ETHYLENE yield of this catalyst compared with implementing ZSM-5 support. It was found that Cr/ZSM5 effectively dehydrogenated ETHANE to ETHYLENE in the presence of CO2 at 700 °C, giving 45.4% ETHYLENE yield. Coke deposition as a result of the presence of strong acid sites is mainly responsible for decreasing trend observed for catalytic performance with increasing reaction time.

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APA: Copy

RAHMANI, FARHAD, & HAGHIGHI, MOHAMMAD. (2017). INFLUENCE OF VARIOUS TYPES OF ZEOLITIC SUPPORTS ON CATALYTIC PROPERTIES AND PERFORMANCE OF CR-BASED NANOCATALYSTS USED IN C2H6/CO2 OXIDATIVE DEHYDROGENATION PROCESS. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), 36(1), 65-81. SID. https://sid.ir/paper/25989/en

Vancouver: Copy

RAHMANI FARHAD, HAGHIGHI MOHAMMAD. INFLUENCE OF VARIOUS TYPES OF ZEOLITIC SUPPORTS ON CATALYTIC PROPERTIES AND PERFORMANCE OF CR-BASED NANOCATALYSTS USED IN C2H6/CO2 OXIDATIVE DEHYDROGENATION PROCESS. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN)[Internet]. 2017;36(1):65-81. Available from: https://sid.ir/paper/25989/en

IEEE: Copy

FARHAD RAHMANI, and MOHAMMAD HAGHIGHI, “INFLUENCE OF VARIOUS TYPES OF ZEOLITIC SUPPORTS ON CATALYTIC PROPERTIES AND PERFORMANCE OF CR-BASED NANOCATALYSTS USED IN C2H6/CO2 OXIDATIVE DEHYDROGENATION PROCESS,” NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), vol. 36, no. 1, pp. 65–81, 2017, [Online]. Available: https://sid.ir/paper/25989/en

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