当前位置：
X-MOL 学术
›
Energy Fuels
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Bi-reforming of Methane with Carbon Dioxide and Steam on Nickel-Supported Binary Mg–Al Metal Oxide Catalysts
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-03-13 , DOI: 10.1021/acs.energyfuels.9b03312 Dedong He 1, 2 , Yimin Zhang 2 , Zichun Wang 1 , Yi Mei 2 , Yijiao Jiang 1
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-03-13 , DOI: 10.1021/acs.energyfuels.9b03312 Dedong He 1, 2 , Yimin Zhang 2 , Zichun Wang 1 , Yi Mei 2 , Yijiao Jiang 1
Affiliation
|
Bi-reforming of methane (CH4) with carbon dioxide (CO2) and steam is a promising process to produce syngas with a H2/CO ratio of about 2, which can be directly used as a feedstock for methanol synthesis. This work studied nickel nanoparticles supported on the binary Mg–Al metal oxide catalysts for the bireforming of CH4. The XRD, TEM, and FT-IR results confirm the successful synthesis of Ni/MgO, Ni/MgxAlyO, and Ni/Al2O3 catalysts. The TPR profile shows that the reduction temperature of Ni species was slightly decreased upon addition of Al due to the formation of the NiAl2O4 phase. The XPS spectra demonstrate that Ni/MgO and Ni/Al2O3 exhibit higher amounts of Ni0 after H2 reduction. It can explain the origin of the superior catalytic performance of Ni/MgO and Ni/Al2O3 over the Ni/MgxAlyO catalysts possessing less Ni0 species during the H2 reduction process. Compared to the conventional dry reforming of CH4, the bi-reforming process features a higher CH4 conversion and a H2/CO ratio close to 2, which is suitable for methanol synthesis without further separation and adjustment steps.
中文翻译：
镍负载的二元Mg-Al金属氧化物催化剂上甲烷与二氧化碳和蒸汽的双重整
甲烷（CH 4）与二氧化碳（CO 2）和蒸汽的双重整是一种生产H 2 / CO比约为2的合成气的有前途的方法，该合成气可直接用作甲醇合成的原料。这项工作研究了负载在二元Mg-Al金属氧化物催化剂上的镍纳米颗粒，用于CH 4的双重整。XRD，TEM和FT-IR结果证实了Ni / MgO，Ni / Mg x Al y O和Ni / Al 2 O 3催化剂的成功合成。TPR曲线表明，由于形成了NiAl 2 O 4，添加Al后，Ni物种的还原温度略有降低。相。XPS光谱表明，在H 2还原后，Ni / MgO和Ni / Al 2 O 3表现出更高的Ni 0量。它可以解释Ni / MgO和Ni / Al 2 O 3优于H 2还原过程中具有较少Ni 0物种的Ni / Mg x Al y O催化剂的优异催化性能的起源。与传统的CH 4干重整相比，双重整工艺具有更高的CH 4转化率和H 2/ CO比接近2，适合于甲醇合成，无需进一步的分离和调节步骤。
更新日期：2020-04-23
中文翻译：
镍负载的二元Mg-Al金属氧化物催化剂上甲烷与二氧化碳和蒸汽的双重整
甲烷（CH 4）与二氧化碳（CO 2）和蒸汽的双重整是一种生产H 2 / CO比约为2的合成气的有前途的方法，该合成气可直接用作甲醇合成的原料。这项工作研究了负载在二元Mg-Al金属氧化物催化剂上的镍纳米颗粒，用于CH 4的双重整。XRD，TEM和FT-IR结果证实了Ni / MgO，Ni / Mg x Al y O和Ni / Al 2 O 3催化剂的成功合成。TPR曲线表明，由于形成了NiAl 2 O 4，添加Al后，Ni物种的还原温度略有降低。相。XPS光谱表明，在H 2还原后，Ni / MgO和Ni / Al 2 O 3表现出更高的Ni 0量。它可以解释Ni / MgO和Ni / Al 2 O 3优于H 2还原过程中具有较少Ni 0物种的Ni / Mg x Al y O催化剂的优异催化性能的起源。与传统的CH 4干重整相比，双重整工艺具有更高的CH 4转化率和H 2/ CO比接近2，适合于甲醇合成，无需进一步的分离和调节步骤。
京公网安备 11010802027423号