Data · dataset · 2026
CeO2-Modified NiCuMgAl Mixed Metal Catalyst for Dry Reforming of Methane
Listed in ScienceDB
Dry reforming of methane (DRM) can simultaneously convert two greenhouse gases into syngas, offering both environmental and resource utilization benefits.
Description
However, this reaction still faces key challenges such as high energy consumption and catalyst deactivation due to carbon deposition and sintering. In this study, NiCuMgAl hydrotalcite precursors were prepared via the urea hydrothermal method, and cerium nitrate solutions of different concentrations were introduced by impregnation.
After calcination and reduction, a series of NiCuMgAl catalysts with CeO2 loadings of 5%, 10%, 15%, and 20% were obtained. The effects of CeO2 content on the catalyst structure, surface properties, and DRM performance were systematically investigated. The catalysts were characterized by XRD, BET, SEM, TEM, XPS, CO2-TPD, NH3-TPD, FTIR, and TG.
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The results indicate that the formation of Ni-Cu alloy effectively suppresses carbon deposition, while the introduction of CeO2 generates abundant oxygen vacancies. Among all catalysts, NiCuMgAl-15%Ce exhibits the highest oxygen vacancy concentration (33.80%), together with the strongest medium‑strong basic sites (250.4 °C) and medium‑strong acid sites (240.7 °C), forming an ideal acid–base synergy. Under the conditions of 600 °C and a mass space velocity of 36000 mL·g−1·h−1, this catalyst achieves CH4 and CO2 conversions of 36.2% and 53.1%, respectively, operates stably for 32 h, and shows a coke deposition of only 6.2%.
Its performance is significantly superior to that of the unmodified catalyst and those with either too low or too high CeO2 contents.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.38450 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.38450 | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license_text | source · scidb cn | connector:scidb_cn@1.0.0 | |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |