Conversion of phenol to cyclohexane in the aqueous phase over Ni/zeolite bi-functional catalysts
Conversion of phenol to cyclohexane in the aqueous phase over Ni/zeolite bi-functional catalysts
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DOI：
10.1007/s11705-020-1932-y
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发表时间：
2020-06
影响因子：
4.5
通讯作者：
Jimei Zhang;Fuping Tian;Junwen Chen;Yanchun Shi;Hongbin Cao;Pengge Ning;Shanshan Sun;Yongbing Xie-Yongb
中科院分区：
文献类型：
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作者：
Jimei Zhang;Fuping Tian;Junwen Chen;Yanchun Shi;Hongbin Cao;Pengge Ning;Shanshan Sun;Yongbing Xie-Yongb
合成了一系列Ni/HZSM-5和Ni/HIM-5双功能催化剂，并将其应用于苯酚水相加氢脱氧(HDO)。 Ni的分散性和粒径与母沸石的孔隙率和晶体尺寸直接相关，这进一步影响了催化性能。母沸石的大孔和小晶体尺寸有利于Ni的分散和形成小Ni颗粒，相应的Ni/沸石催化剂表现出较高的苯酚转化率和对烃类的选择性。重要的是，当在220℃加热1小时时，Ni/HIM-5双功能催化剂表现出高活性（98.3％）和对烃类的高选择性（98.8％），因此是酚类HDO在水相中形成烃类的新的潜在催化剂。
A series of Ni/HZSM-5 and Ni/HIM-5 bi-functional catalysts were synthesized and applied to the aqueous-phase hydrodeoxygenation (HDO) of phenol. The Ni dispersibility and particle sizes were shown to be directly related to the porosity and crystal sizes of the parent zeolites, which further influenced the catalytic performances. The large pores and small crystal sizes of the parent zeolites were beneficial for dispersing Ni and forming small Ni particles, and the corresponding Ni/zeolite catalyst exhibited a higher phenol conversion and selectivity towards hydrocarbons. Importantly, the Ni/HIM-5 bi-functional catalyst exhibited a high activity (98.3%) and high selectivity for hydrocarbons (98.8%) when heated at 220°C for 1 h and is thus a new potential catalyst for the HDO of phenolics to form hydrocarbons in the aqueous phase.