Abstract

Copper-containing catalytic slurries with different concentrations of active metal precursor solutions are synthesized by drop thermolysis in situ in the hydrocarbon medium of a slurry reactor. According to dynamic light scattering, the particle size of the catalytic slurry dispersion phase is 3–4.5 nm and it remains almost unchanged during the synthesis. Using FTIR spectroscopy it is shown that the structure of precursors of slurry active species depends on the concentration of solution, which may influence the phase composition of catalytically active fragments of the surface during the reduction and synthesis of alcohols. It is demonstrated that alcohols may be synthesized from CO and H₂ in the slurry reactor in the presence of the formed nanosized slurries. It is revealed that the composition of alcohol phase products differs significantly with target product selectivity being comparable: at a low concentration of precursor solution a marked amount of methanol is contained in the mixture (up to 66%), while an increase in the concentration of precursor solution causes a rise in the proportion of higher molecular weight alcohols to 88%.

中文翻译：

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含铜钴浆液中由СО和Н2三相一步合成醇的特征

摘要

通过在淤浆反应器的烃介质中就地滴加热分解合成具有不同浓度的活性金属前体溶液的含铜催化淤浆。根据动态光散射，催化浆液分散相的粒径为3–4.5 nm，在合成过程中几乎保持不变。使用FTIR光谱表明，浆料活性物质前体的结构取决于溶液的浓度，这可能会影响醇还原和合成过程中表面催化活性片段的相组成。结果表明，醇可以由CO和H ₂合成在浆液反应器中在形成的纳米级浆液的存在下进行。结果表明，醇相产物的组成差异很大，目标产物的选择性相当：在低浓度的前体溶液中，混合物中会含有明显量的甲醇（最高66％），而甲醇的浓度却有所增加。前体溶液导致较高分子量醇的比例增加到88％。