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首页> 美国卫生研究院文献>Nanoscale Research Letters >Pyrolysis and co-pyrolysis of Laminaria japonica and polypropylene over mesoporous Al-SBA-15 catalyst
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Pyrolysis and co-pyrolysis of Laminaria japonica and polypropylene over mesoporous Al-SBA-15 catalyst

机译：海藻和聚丙烯在介孔Al-SBA-15催化剂上的热解和共热解

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摘要

The catalytic co-pyrolysis of a seaweed biomass, Laminaria japonica, and a typical polymer material, polypropylene, was studied for the first time. A mesoporous material Al-SBA-15 was used as a catalyst. Pyrolysis experiments were conducted using a fixed-bed reactor and pyrolysis gas chromatography/mass spectrometry (Py-GC/MS). BET surface area, N2 adsorption-desorption isotherms, and NH3 temperature programmed desorption were measured to examine the catalyst characteristics. When only L. japonica was pyrolyzed, catalytic reforming slightly increased the gas yield and decreased the oil yield. The H2O content in bio-oil was increased by catalytic reforming from 42.03 to 50.32 wt% due to the dehydration reaction occurring on the acid sites inside the large pores of Al-SBA-15. Acids, oxygenates, mono-aromatics, poly aromatic hydrocarbons, and phenolics were the main components of the bio-oil obtained from the pyrolysis of L. japonica. Upon catalytic reforming over Al-SBA-15, the main oxygenate species 1,4-anhydro-d-galactitol and 1,5-anhydro-d-manitol were completely removed. When L. japonica was co-pyrolyzed with polypropylene, the H2O content in bio-oil was decreased dramatically (8.93 wt% in the case of catalytic co-pyrolysis), contributing to the improvement of the oil quality. A huge increase in the content of gasoline-range and diesel-range hydrocarbons in bio-oil was the most remarkable change that resulted from the co-pyrolysis with polypropylene, suggesting its potential as a transport fuel. The content of mono-aromatics with high economic value was also increased significantly by catalytic co-pyrolysis.
机译：首次研究了海藻生物量，海带和典型的聚合物材料聚丙烯的催化共热解。使用介孔材料Al-SBA-15作为催化剂。使用固定床反应器和热解气相色谱/质谱仪（Py-GC / MS）进行热解实验。测量BET表面积，N2吸附-脱附等温线和NH3程序升温脱附，以检查催化剂的特性。当仅日本粳稻被热解时，催化重整会稍微提高产气量并降低产油量。由于发生在Al-SBA-15大孔内酸性部位的脱水反应，通过催化重整将生物油中的H2O含量从42.03％增加到50.32wt％。酸，含氧化合物，单芳族化合物，多芳烃和酚类化合物是从日本乳杆菌热解获得的生物油的主要成分。在Al-SBA-15上催化重整后，主要的含氧物质1，4-脱水-d-半乳糖醇和1，5-脱水-d-甘露糖醇被完全除去。当L.japonica与聚丙烯共热解时，生物油中的H2O含量显着降低（催化共热解时为8.93 wt％），有助于改善油质。与聚丙烯共热解产生的最显着变化是生物油中汽油范围和柴油范围碳氢化合物的含量大幅增加，表明了其作为运输燃料的潜力。通过催化共热解，具有较高经济价值的单芳烃含量也显着增加。

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