e-journal

Binary Cr–Mo oxide catalysts supported on MgO-coated polyhedral three-dimensional mesoporous SBA-16 for the oxidative dehydrogenation of iso-butane

---

Abstract
Binary Cr–Mo oxide catalysts (denoted as Cr(x)Mo(y), x/y = nominal Cr/Mo molar ratio) supported on
MgO-coated polyhedral three-dimensional (3D) mesoporous SBA-16 (MS) were fabricated for the
oxidative dehydrogenation of iso-butane. The materials were characterized by a number of techniques
for the establishment of the relationships between physicochemical properties and catalytic
performance. The use of high-surface-area 3D MS as support for Cr–Mo oxide catalysts leads to
increases of catalytic activity and of selectivity to iso-butene. The Cr(x)Mo(y) catalysts show higher isobutene
yield than the Cr/MS or Mo/MS catalyst. Under the conditions of iso-butane/O2 molar ratio = 1/2,
space velocity = 30,000 mL/(g h), and reaction temperature = 540 8C, maximal iso-butene yield of 7.5%
(iso-butane conversion = 10.0% and iso-butene selectivity = 75.0%) can be achieved over the Cr3Mo1
catalyst. Based on the results of characterization and activity evaluation, we conclude that the excellent
catalytic performance can be attributed to the moderate basicity, good dispersion of CrOx and MoOx, high
Cr6+ content, and high initial H2 consumption rate of Cr3Mo1.

Keywords: iso-Butane oxidative dehydrogenation, MgO-coated mesoporous silica, Supported binary Cr–Mo oxide catalyst, Three-dimensional polyhedral SBA-16.

---

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 354 (2009) 72–81

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