Production of biofuels from pine needle via catalytic fast pyrolysis over HBeta

• Published in: The Korean journal of chemical engineering Vol. 37; no. 3; pp. 493 - 496
• Main Authors: Kim, Young-Min, Lee, Hyung Won, Jang, Seong Ho, Jeong, Jaehun, Ryu, Sumin, Jung, Sang-Chul, Park, Young-Kwon
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2020; Springer Nature B.V; 한국화학공학회
• Subjects: Aluminum oxide; Benzene; Biotechnology; Catalysis; Catalysts; Catalytic converters; Chemistry; Chemistry and Materials Science; Chromatography; Decomposition; Ethylbenzene; Gas chromatography; Hydrocarbons; Industrial Chemistry/Chemical Engineering; Mass spectrometry; Materials Science; Needles; Pine; Polycyclic aromatic hydrocarbons; Pyrolysis; Scientific imaging; Silicon dioxide; Spectroscopy; Thermogravimetric analysis; Toluene; 화학공학; Pine Needle; BTEX; HBeta; Catalytic Pyrolysis
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-019-0467-8

The thermal and catalytic pyrolysis of pine needles over HBeta catalysts with different SiO 2 /Al 2 O 3 ratios (25 and 300) were investigated by thermogravimetric analysis (TGA) and pyrolyzer-gas chromatography/mass spectrometry. TGA showed that the main decomposition of pine needles occurred between 150 and 550 °C. The catalytic DTG curves revealed the same decomposition temperature region as the non-catalytic TG curve of pine needles. Pyrolyzergas chromatography/mass spectrometry suggested that the effective catalytic conversion of pyrolyzate intermediates and other hydrocarbons to aromatic hydrocarbons can be achieved using HBeta catalysts at 600 °C. HBeta(25) produced a larger amount of aromatic hydrocarbons than HBeta(300) because of its higher acid amounts. By increasing the reaction temperature from 500 to 700 °C, the formation of benzene, toluene, ethylbenzene, xylenes (BTEXs) and other polycyclic aromatic hydrocarbons was increased with a concomitant decrease in phenolics and other oxygenates. The formation efficiency of BTEXs was increased further by increasing the catalyst loading.