Paper details

Title:

A Novel Ni-Al Spinel-Based Catalyst for Dry Reforming of CH4-Rich Gasification Tail Gas Streams

Author(s):

Abatzoglou, N., Blanchard, J., Achouri, I. E.

Document(s):

Abstract:

The objective of this work was to test a recently­patented Ni­Al spinel, supported on anAl2O3/YSZ (yttria­stabilized zirconia) ceramic support in catalytic reforming of CH4­rich gas streams (i.e. gasification tail gas). Previous studies have disclosed that similar formulations are efficient in pure streams of naphthalene, of CH4 and of diesel via steam reforming with aging resistance near that of: (a) more expensive noble metal­based catalysts, and (b) standard commercial Ni­based reforming catalysts. Catalytic activity was measured at atmospheric pressure in a differential reactor set­up constructed for real­time monitoring of reforming reactions. The other experimental conditions were: temperature=850°C; molar CO2/CH4: 1.1­2.1; inert gas (Ar) as diluent and internal standard at 28% v/v of total inlet flow; catalyst mass ranging between 0.02 and 0.6 g; and gas hourly space velocity (GHSV) from 30,000 to 180,000 mlSTP/(gcata*h). NiAl2O4/Al2O3­YSZ, the catalyst tested, hasNi loading of 5% w/w andAl2O3/YSZ mass ratio of 1/1; where YSZis Y2O3­stabilized ZrO2(Y2O3 7% w/w). The results indicate thatthe catalyst prevents carbon deposition in all conditions tested, including dry reforming at molar CO2/CH4of 2.1 for 450 h, 1.1 for 143h or 1.2 for 275h. The observed deactivation occurs via oxidation.

Keywords:

gasification, catalytic reforming, tail gas, synthetic fuels, nickel, spinel

Topic:

Biomass Conversion Technologies for Intermediates, Liquid and Gaseous Fuels, Chemicals and Materials

Subtopic:

Synthetic biofuels

Event:

22nd European Biomass Conference and Exhibition

Session:

3DO.7.3

Pages:

1004 - 1007

ISBN:

978-88-89407-52-3

Paper DOI:

10.5071/22ndEUBCE2014-3DO.7.3

Price:

FREE