Abstract

The problem of optimizing the textural characteristics and chemical composition of the alumina support of a vacuum gasoil hydrotreating catalyst is considered. The catalyst is synthesized using the state-of-the-art environmentally friendly technology of flash calcination of gibbsite. Ways of increasing its specific surface area by introducing inorganic additives containing boron or sulfur at the stage of synthesizing boehmite with needle-shaped particles are developed. It is established that introducing such modifiers raises S_BET by 50–100 m²/g, relative to the maximum values that can be attained by varying the standard parameters of hydrothermal treatment. It is shown that introducing boron at the stage of boehmite synthesis improves the catalytic activity of CoNiMoP catalyst in the hydrodesulfurization and hydrodenitrogenation of vacuum gasoil by two or more times, relative to a similar catalyst doped with boron from an impregnating solution.

中文翻译：

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闪蒸煅烧菱镁矿生成假勃姆石的阶段引入硼和硫，优化了加氢处理催化剂氧化铝载体的性能。

摘要

考虑了优化真空瓦斯油加氢处理催化剂的氧化铝载体的质地特性和化学组成的问题。该催化剂是使用最先进的三水铝镁快速煅烧的环保技术合成的。开发了在通过针状颗粒合成勃姆石的阶段中通过引入含有硼或硫的无机添加剂来增加比表面积的方法。已经确定，引入此类改性剂可使S _BET提高50–100 m ²/ g，相对于通过改变水热处理的标准参数可获得的最大值。结果表明，在勃姆石合成阶段引入硼，可使CoNiMoP催化剂在真空瓦斯油的加氢脱硫和加氢脱氮中的催化活性比从浸渍溶液中掺杂硼的相似催化剂提高两倍或更多倍。