Sorption enhanced catalytic steam gasification process: A direct route from lignocellulosic biomass to high purity hydrogen
We report for the first time on the one-stage production of high purity hydrogen from raw solid lignocellulosic biomass by sorption enhanced catalytic steam gasification (SECSG) in a combined downdraft flow fluidized bed and fixed bed reactor. A Pd/Co-Ni catalyst derived from a hydrotalcite-like mat...
| Authors: | , , |
|---|---|
| Format: | article |
| Status: | Versión aceptada para publicación |
| Publication Date: | 2012 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/377348 |
| Online Access: | http://hdl.handle.net/10261/377348 https://api.elsevier.com/content/abstract/scopus_id/84858994257 |
| Access Level: | Open access |
| Keyword: | Mixed self-assembled monolayer (SAM) http://metadata.un.org/sdg/7 http://metadata.un.org/sdg/9 Ensure access to affordable, reliable, sustainable and modern energy for all Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation |
| Summary: | We report for the first time on the one-stage production of high purity hydrogen from raw solid lignocellulosic biomass by sorption enhanced catalytic steam gasification (SECSG) in a combined downdraft flow fluidized bed and fixed bed reactor. A Pd/Co-Ni catalyst derived from a hydrotalcite-like material (HT) and dolomite as a CO<inf>2</inf> acceptor are fed together with a biomass (chestnut wood sawdust) as the reactor feed. Almost pure hydrogen (>99.9 vol%) and high H<inf>2</inf> yields (up to 90%) can be achieved by this process, which combines conventional gasification/steam reforming, water-gas shift (WGS) reaction and H<inf>2</inf> separation by CO<inf>2</inf> capture in one step. The in situ removal of CO<inf>2</inf> by the carbonation reaction of dolomite shifts the equilibrium of steam reforming and WGS reactions towards H <inf>2</inf> production. The hydrotalcite derived Pd/Co-Ni catalyst has shown high activity in the cleavage of C-C and C-H bonds during the conversion of tars and hydrocarbons resu |
|---|