Hydrogen production by steam methane reforming in a membrane reactor equipped with a Pd composite membrane deposited on a porous stainless steel

Chang Hyun Kim, Jae Yun Han, Sehwa Kim, Boreum Lee, Hankwon Lim, Kwan Young Lee, Shin Kun Ryi

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

With the aim of producing hydrogen at low cost and with a high conversion efficiency, steam methane reforming (SMR) was carried out under moderate operating conditions in a Pd-based composite membrane reactor packed with a commercial Ru/Al2O3 catalyst. A Pd-based composite membrane with a thickness of 4-5 μm was prepared on a tubular stainless steel support (diameter of 12.7 mm, length of 450 mm) using electroless plating (ELP). The Pd-based composite membrane had a hydrogen permeance of 2.4 × 10-3 mol m-1 s-1 Pa-0.5 and an H2/N2 selectivity of 618 at a temperature of 823 K and a pressure difference of 10.1 kPa. The SMR test was conducted at 823 K with a steam-to-carbon ratio of 3.0 and gas hourly space velocity of 1000 h-1; increasing the pressure difference resulted in enhanced methane conversion, which reached 82% at a pressure difference of 912 kPa. To propose a guideline for membrane design, a process simulation was conducted for conversion enhancement as a function of pressure difference using Aspen HYSYS®. A stability test for SMR was conducted for ~120 h; the methane conversion, hydrogen production rate, and gas composition were monitored. During the SMR test, the carbon monoxide concentration in the total reformed stream was <1%, indicating that a series of water gas shift reactors was not needed in our membrane reactor system.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusAccepted/In press - 2017 Jan 1

Fingerprint

Composite membranes
Steam reforming
hydrogen production
Hydrogen production
steam
stainless steels
methane
Stainless steel
reactors
membranes
Membranes
composite materials
Methane
Hydrogen
Water gas shift
Electroless plating
Gases
Carbon monoxide
Conversion efficiency
stability tests

Keywords

  • Hydrogen
  • Membrane reactor
  • Pd-based composite membrane
  • Process simulation
  • Stability
  • Steam methane reforming

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Hydrogen production by steam methane reforming in a membrane reactor equipped with a Pd composite membrane deposited on a porous stainless steel. / Kim, Chang Hyun; Han, Jae Yun; Kim, Sehwa; Lee, Boreum; Lim, Hankwon; Lee, Kwan Young; Ryi, Shin Kun.

In: International Journal of Hydrogen Energy, 01.01.2017.

Research output: Contribution to journalArticle

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