tailieunhanh - Báo cáo hóa học: " Catalytic pyrolysis of Laminaria japonica over nanoporous catalysts using Py-GC/MS"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Catalytic pyrolysis of Laminaria japonica over nanoporous catalysts using Py-GC/MS | Lee et al. Nanoscale Research Letters 2011 6 500 http content 6 1 500 o Nanoscale Research Letters a SpringerOpen Journal NANO EXPRESS Open Access Catalytic pyrolysis of Laminaria japonica over nanoporous catalysts using Py-GC MS Hyung Won Lee 1 Jong-Ki Jeon2 Sung Hoon Park3 Kwang-Eun Jeong4 Ho-Jeong Chae4 and Young-Kwon Park1 5 Abstract The catalytic pyrolysis of Laminaria japonica was carried out over a hierarchical meso-MFI zeolite Meso-MFI and nanoporous Al-MCM-48 using pyrolysis gas chromatography mass spectrometry Py-GC MS . The effect of the catalyst type on the product distribution and chemical composition of the bio-oil was examined using Py-GC MS. The Meso-MFI exhibited a higher activity in deoxygenation and aromatization during the catalytic pyrolysis of L. japonica. Meanwhile the catalytic activity of Al-MCM-48 was lower than that of Meso-MFI due to its weak acidity. Keywords Laminaria japonica hierarchical meso-MFI zeolite Al-MCM-48 Py-GC MS Introduction The importance of alternative energy development has increased rapidly due to high international crude oil price. Therefore many studies have been reported about producing bioenergy using various biomasses 1-6 . Among them seaweeds are attractive biomass for fuel production with higher production rates than land biomass due to their high photosynthesis efficiency 5 . When cultivated in the sea seaweeds do not require water land or fertilizers which reduces the cost and energy input. Producing biofuels and utilizing seaweeds residues reduce greenhouse gas emissions as long as such activities do not disturb the food supply and marine ecosystem. Pyrolysis is one option for processing biomass for the production of feedstock and fuel 1-6 . The bio-oils produced via seaweeds pyrolysis can be used as heating fuel but the fuel quality is low due to its high oxygen content 5 . In terms of importance of seaweeds as a potential source of biofuel investigation on upgrading of .