本文關(guān)鍵詞： HDS P改性 柴油 完全液相法 漿狀催化劑　出處：《石油學(xué)報(石油加工)》2017年03期 　論文類型：期刊論文

【摘要】：采用完全液相法制備了以TiO_2-AlOOH為載體,Ni、Mo、W為活性組分的加氫脫硫(HDS)漿狀催化劑,主要考察了P助劑的添加對催化劑結(jié)構(gòu)與性能的影響。并利用XRD、BET、NH3-TPD、XPS等技術(shù)對催化劑進(jìn)行表征。結(jié)果表明,完全液相法制備的催化劑具有較大的比表面積及孔徑、孔容;且在添加P后,催化劑比表面積及孔徑、孔容均有較大幅度的增加。柴油的脫硫性能評價結(jié)果表明,當(dāng)助劑P的添加質(zhì)量分?jǐn)?shù)為1%時,催化劑具有最佳的脫硫活性,可將柴油的硫質(zhì)量分?jǐn)?shù)降到10μg/g以下,脫硫率高達(dá)97.9%。分析表明,P與載體AlOOH作用,產(chǎn)生了AlPO4結(jié)構(gòu)相,從而使催化劑表面的酸量增加;助劑P的添加,顯著降低了催化劑活性相與載體的結(jié)合能,使得載體與活性相的相互作用降低,有助于活性相硫化程度的提高,進(jìn)而有助于HDS效果的提升。
[Abstract]:A hydrodesulfurization (HDS) slurry catalyst with TiO_2-AlOOH as the carrier and NiMoMoHW as the active component was prepared by the complete liquid phase method. The effect of the addition of P promoter on the structure and performance of the catalyst was investigated. The catalyst was characterized by XRDX BETH NH 3-TPD XPS. The results showed that the catalyst prepared by the complete liquid phase method had a large specific surface area, pore size and pore volume. After adding P, the specific surface area, pore size and pore volume of the catalyst increased greatly. The results of desulfurization performance evaluation of diesel oil showed that the catalyst had the best desulfurization activity when the mass fraction of additive P was 1. The sulfur content of diesel oil can be reduced to less than 10 渭 g / g, and the desulfurization rate is as high as 97.9%. The analysis shows that the AlPO4 structure phase is produced by the interaction of P with the carrier AlOOH, which increases the acid content on the surface of the catalyst. The binding energy of the active phase of the catalyst and the support was significantly reduced, and the interaction between the support and the active phase was reduced, which was helpful to the improvement of the degree of sulfidation of the active phase and the enhancement of the effect of HDS.
【作者單位】： 太原理工大學(xué)煤科學(xué)與技術(shù)教育部和山西省重點實驗室;
【基金】：國家自然科學(xué)基金重點項目(21336006) 國家科技支撐計劃項目(2013BAC14B04)資助
【分類號】：TE624.9
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本文編號：1512633