e-journal

One-step synthesis of H–B zeolite-enwrapped Co/Al2O3 Fischer–Tropsch catalyst with high spatial selectivity

---

Abstract.
A tailor-made encapsulated catalyst with a H–B zeolite shell has been directly synthesized over Co/Al2O3
pellets to form a core–shell structure without pinholes and cracks by a hydrothermal synthesis method.
Pretreatment of the Co/Al2O3 pellets with reflux of hot TEAOH solution can clean and corrode the pellet
surface due to its strong basicity, and can enlarge the mean pore size of the pellets. Impregnation of the
Co/Al2O3 pellets in EtOH is important to avoid the corrosion of the internal pores, to prevent the introduction of Co species into the zeolite coating, and to realize a pure and uniformed B-zeolite coating.
For the catalytic reaction of direct isoparaffin synthesis from syngas, the molar ratio of Cisoparaffin/
Cnormal-paraffin of the products obtained from the encapsulated catalyst increased about 64% than that of
the products obtained from physical-mixed components. This concept of encapsulated catalyst can be
useful to carry out various consecutive or multiple-step catalytic processes, where multiple reactions
occur on different active centers.

Keywords:
H–B zeolite coating
Encapsulated catalyst
Core–shell structure
Fischer–Tropsch synthesis
Isoparaffin synthesis
Spatial selectivity

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Journal of Catalysis

No. Panggil

-

Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Catalysis 265 (2009) 26–34

Bahasa

English

ISBN/ISSN

00219517

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