e-journal

Dehydrogenation of ethane to ethylene over a highly efficient Ga2O3/HZSM-5 catalyst in the presence of CO2

---

Abstract.
Dehydrogenation of ethane to ethylene in the presence of carbon dioxide was investigated over various
gallium-based catalysts. Ga2O3/HZSM-5 catalysts show better stability than b-Ga2O3, and the higher Si/
Al ratio HZSM-5 supported gallium oxide catalysts are more resistant to deactivation. The Ga2O3/HZSM-
5(97) catalyst exhibits both high activity and stability for dehydrogenation of ethane, with an ethane
conversion of 15% and ethylene selectivity of 94% without any observable trend of deactivation in 70 h.
The results of NH3-TPD and FT-IR spectra of adsorbed pyridine revealed that the enhancement of the
catalyst stability with increasing Si/Al ratio of the support is caused by the decrease of the acidity of
the catalysts, resulting in the suppression of the side reactions, such as cracking and oligomerization. The
promoting effect of CO2 on the dehydrogenation reaction is attributed to the reverse water gas shift
reaction. The catalyst stability is also enhanced by the introduction of CO2.

Keywords: Dehydrogenation, Ethane, Ga2O3/HZSM-5, Stability, Carbon dioxide.

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Applied Catalysis A: General

No. Panggil

-

Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Applied Catalysis A: General 356 (2009) 148–153

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

KIMIA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar