Abstract

The structure of Fe-containing components of the carbon adsorbent prepared from the residue after carbon dioxide lignin reforming stimulated by microwave radiation was studied before and after the m-cresol sorption. As shown by X-ray photoelectron spectroscopy (XPS), the prevalent state of iron in the samples is Fe³⁺. The revealed “apparent decrease in the iron content” after the adsorbent treatment with cresol is due to the formation of surface complexes partially absorbing the emitted photoelectrons. The Mössbauer spectra show that the iron-containing phase of the initial adsorbent contains a fraction of Fe⁰ atoms (≈7%), which are oxidized from 0 to 3+ oxidation state upon m-cresol adsorption. This result can be attributed to the occurrence of reactions yielding surface iron alcoholates.

中文翻译：

---

木质素加工后由碳残留物制得的含铁多孔吸附剂中的间甲酚化学吸附：II。1间甲酚化学吸附对含铁组分结构特征的影响

摘要

所述碳吸附剂的含Fe成分的结构从残余物中制备二氧化碳木质素通过微波辐射重整刺激后前和后进行了研究米甲酚吸附。如X射线光电子能谱（XPS）所示，样品中铁的普遍状态为Fe ³⁺。在用甲酚进行吸附剂处理后，发现“铁含量明显降低”是由于形成了表面复合物，部分吸收了所发射的光电子。穆斯堡尔光谱表明，初始吸附剂的含铁相含有Fe的一部分⁰原子（≈7％），其被氧化为0〜时3+氧化态米-甲酚吸附。该结果可归因于发生产生表面铁醇化物的反应。