Synthesis and performance of mesoporous iron oxide in vacuum residue slurry-phase hydrocracking
Synthesis and performance of mesoporous iron oxide in vacuum residue slurry-phase hydrocracking
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减压渣油浆相加氢裂化介孔氧化铁的合成及性能
DOI：
10.1016/j.fuel.2022.126063
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发表时间：
2022
期刊：
影响因子：
7.4
通讯作者：
Qingyan Cui
中科院分区：
文献类型：
--
作者：
Xiubin Hu;Jianbo Wang;Tinghai Wang;Chan Wang;Hongwei Zhang;Pei Yuan;Qingyan Cui
为了开发一种用于劣质重油悬浮相加氢裂化的高效氧化铁催化剂，以废木粉为模板剂成功合成了介孔氧化铁，并考察了碱浓度对合成样品晶相、形貌和孔结构的影响。XRD和HRTEM结果表明，随着碱浓度的增加，合成氧化铁的晶相由α-Fe 2 O3向γ-Fe 2 O3转变，晶粒尺寸逐渐减小。N2吸附-脱附分析表明，在较高的碱浓度下，可以得到具有介孔结构、较大比表面积和孔容的铁氧化物。对铁系催化剂用于减压渣油悬浮相加氢裂化的评价结果表明，Fe-O-B20、Fe-O-B24和Fe-O-B30催化剂上的汽油和柴油馏分产率高于Fe-O-B2和Fe-O-B14催化剂上的汽油和柴油馏分产率，这可能是由于催化剂具有较大的比表面积和孔体积，使更多的Fe活性位暴露在催化剂表面，该催化剂可抑制中间产物的过裂化反应和多环芳烃在减压渣油中的缩合反应，从而提高汽油和柴油馏分的收率。
In order to develop a high-efficiency iron oxide catalyst for the slurry-phase hydrocracking of poor heavy oil, the mesoporous iron oxide was successfully synthesized by using the waste wood powder as a template, and the influence of alkali concentration in the resulting solution on crystal phase, morphology and pore structure of the synthesized samples was investigated. The crystal phase of the synthesized iron oxide transfers from α-Fe2O3to γ-Fe2O3, and their crystal sizes gradually decrease with an increase of alkali concentration based on the XRD and HRTEM results. Additionally, the iron oxide with mesoporous structure, larger surface area and pore volume is obtained at the higher concentration of alkali in solution confirmed by N2adsorption-desorption analysis. The assessment result of the iron oxide catalyst employed in the slurry-phase hydrocracking of vacuum residue (VR) illustrates that the yields of gasoline and diesel distillates obtained over Fe-O-B20, Fe-O-B24and Fe-O-B30catalysts are higher compared with those over Fe-O-B2and Fe-O-B14catalysts, it can be attributed that more exposure Fe active sites derived from their larger surface area and pore volume availably improve the catalyst hydrogenation activity, which can inhibit the over-cracking reaction of intermediate products and the condensation of polycyclic aromatic hydrocarbon in VR to enhance the yields of gasoline and diesel distillates.
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影响因子：
5.3
作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
15
作者：
Jiao, F;Harrison, A;Bruce, PG
通讯作者：
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影响因子：
5.5
作者：
Chinh Nguyen-Huy;Hyukmin Kweon;Hanna Kim;Do Kyoung Kim;Do-Woan Kim;Seung-Hoon Oh;E. Shin
通讯作者：
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