Thin-felt NiO-Al2O3/FeCrAl-fiber catalyst for high-throughput catalytic oxy-methane reforming to syngas
Thin-felt NiO-Al2O3/FeCrAl-fiber catalyst for high-throughput catalytic oxy-methane reforming to syngas
复制标题
用于高通量催化氧甲烷重整制合成气的薄毡 NiO-Al2O3/FeCrAl 纤维催化剂
DOI：
10.1016/j.catcom.2017.07.023
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发表时间：
2017
影响因子：
3.7
通讯作者：
Lu Yong
中科院分区：
文献类型：
--
作者：
Chai Ruijuan;Chen Pengjing;Zhang Zhigiang;Zhao Guofeng;Liu Ye;Lu Yong
针对甲烷氧重整制合成气的高通量催化反应，开发了从微观到宏观尺度的薄毡状NiO-Al_2 O_3/FeCrAl纤维催化剂。结晶驱动的自组装过程用于制备Al（OH）3/FeCrAl-纤维载体（15wt%Al（OH）3）。然后通过初湿含浸法将~ 3wt%的NiO高度分散在上述载体上，随后进行煅烧处理。该催化剂在700 °C和80 L g-1h-1的高气时空速下实现了88.6%的高CH 4转化率和90.7%/93.2%的H2/CO选择性，并且稳定至少30 h而没有碳存款但轻微烧结。相比之下，NiO/FeCrAl-纤维的参比催化剂在仅6小时内显示出快速失活。
Thin-felt NiO-Al2O3/FeCrAl-fiber catalysts engineered from micro- to macro-scales are developed for the high-throughput catalytic oxy-methane reforming to syngas. Crystallization-driven self-assembly process is used to prepare an Al(OH)3/FeCrAl-fiber support (15 wt% Al(OH)3). NiO of ~ 3 wt% is then highly dispersed onto above support via incipient wetness impregnation method followed by a calcination treatment. Such catalyst achieves a high CH4conversion of 88.6% with 90.7%/93.2% selectivity to H2/CO at 700 °C and a high gas hourly space velocity of 80 L g− 1h− 1, and is stable for at least 30 h without carbon deposit but a slight sintering. In contrast, a reference catalyst of NiO/FeCrAl-fiber shows a fast deactivation within only 6 h.