葛笑,苟进胜.金属改性HZSM-5催化快速热解木聚糖制备芳烃化合物[J].包装工程,2021,42(21):105-112.
GE Xiao,GOU Jin-sheng.Catalytic Fast Pyrolysis of Xylan to Aromatic Compounds by Metal Modified HZSM-5[J].Packaging Engineering,2021,42(21):105-112. |
| 金属改性HZSM-5催化快速热解木聚糖制备芳烃化合物 |
| Catalytic Fast Pyrolysis of Xylan to Aromatic Compounds by Metal Modified HZSM-5 |
| 投稿时间：2021-03-13 |
| DOI：10.19554/j.cnki.1001-3563.2021.21.015 |
| 中文关键词: 木聚糖 催化热解 HZSM-5 金属改性 芳烃化合物 |
| 英文关键词: xylan catalytic pyrolysis HZSM-5 metal modification aromatic compounds |
| 基金项目:中央高校基本科研业务费专项资金(2021JD07);国家自然科学基金(21671021) |
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| 中文摘要: |
| 目的 研究金属改性HZSM-5制备的催化剂催化快速热解木聚糖对芳烃类化合物产率及选择性的影响规律。方法 采用硝酸盐(Ni，Ga，Co，Cu和Ca)通过离子交换法制备M-ZSM-5催化剂，同时采用X射线衍射(XRD)、程序升温脱附氨(NH3-TPD)和吡啶红外(Py-IR)对催化剂进行表征分析，使用热解气相色谱-质谱法(Py-GC/MS)催化热解木聚糖，制备芳烃化合物。结果 使用改性后的催化剂显著提高了轻质芳烃产率及其选择性，生物油产量及质量均得到了有效改善。其中当Ga负载量(以质量分数计)为3%时，芳烃化合物相对产量最高(91.52%)，单环芳烃相对产量也最高(54.43%)，轻质芳烃的选择性也有所提高(46.34%)。结论 金属负载后，金属离子和ZSM-5产生了双催化效果，提高了整体催化活性，从而提高了芳烃产率及选择性。 |
| 英文摘要: |
| The work aims to study the effect of fast pyrolysis of xylan catalyzed by metal modified HZSM-5 on the yield and selectivity of aromatic compounds. M-ZSM-5 catalyst was prepared with nitrates (Ni, Ga, Co, Cu and Ca) by ion exchange method. The catalyst was characterized by XRD, NH3-TPD and Py-IR. Xylan was catalytically pyrolyzed by pyrolysis gas chromatography-mass spectrometry (Py-GC/MS) to prepare aromatic compounds. The yield and selectivity of light aromatics were significantly improved by the modified catalyst, and the yield and quality of bio oil were effectively increased. When the Ga loading was 3%, the relative production of aromatic compounds was the highest (91.52%), the relative production of MAHs was also the highest (54.43%), and the selectivity of light aromatics was also improved (46.34%). After the metal is loaded, the metal ion and ZSM-5 have a dual catalytic effect, which improves the catalytic activity, thereby improving the conversion and selectivity of aromatics. |
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