Development of Highly Stable Low Ni Content Catalyst for Dry Reforming of CH4‐Rich Feedstocks,ChemCatChem

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Development of Highly Stable Low Ni Content Catalyst for Dry Reforming of CH4‐Rich Feedstocks
ChemCatChem ( IF 3.8 ) Pub Date : 2020-01-27 , DOI: 10.1002/cctc.201902066
Quan Luu Manh Ha _{1,

2} , Henrik Lund ₁ , Carsten Kreyenschulte ₁ , Stephan Bartling ₁ , Hanan Atia ₁ , Than Huyen Vuong ₁ , Sebastian Wohlrab ₁ , Udo Armbruster ₁

Affiliation

Highly active and coking‐resistant Ni catalysts suited for the dry reforming of CH₄‐rich gases (70 vol %, e. g. biogas or sour natural gas) were prepared starting from a Mg‐rich Mg−Al hydrotalcite support precursor. Calcination at 1000 °C yields two phases, MgO and MgAl₂O₄ spinel. Complexation‐deposition of Ni with citric acid on the preformed support as well as lanthanum addition yields a catalyst with remarkably low carbon accumulation over 100 h on stream attributed to both high Ni dispersion and preferred interactions of Ni with MgO on MgAl₂O₄.

中文翻译：

开发高稳定性，低镍含量的催化剂，用于富含CH4的原料的干重整

从富含镁的Mg-Al水滑石载体前体开始，制备了适合于干重整富含CH _4的气体（70体积％，例如沼气或酸性天然气）的高活性和抗焦化Ni催化剂。在1000°C下煅烧会产生MgO和MgAl ₂ O ₄尖晶石两相。Ni与柠檬酸在预先形成的载体上的络合沉积以及镧的添加产生了一种催化剂，该催化剂在流中在100 h内具有极低的碳积累，这归因于Ni的高分散性以及Ni与MgO在MgAl ₂ O ₄上的优选相互作用。

更新日期：2020-01-27

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