A preparation process of 2-methylnaphthalene （2-MN） was proposed by isomerization, side-stream distillation and extractive distillation. The isomerization of alkyl naphthalene was catalyzed by acid-treated HBEA zeol...A preparation process of 2-methylnaphthalene （2-MN） was proposed by isomerization, side-stream distillation and extractive distillation. The isomerization of alkyl naphthalene was catalyzed by acid-treated HBEA zeolites, and the 2-MN selectivity of isomerization was 92.70%. Side-stream distillation and extractive distillation were investigated by simulation, and effects of operation parameters on 2-MN were studied. Further, the simulated results were verified by experiment. Under the optimal condition, the mass fraction of 2-MN reached to 98.09%; in the oroduct, and the yield was 83.84% in refining orocess.展开更多
Lanthanum oxide impregnated large-pore zeolite catalysts were prepared. The catalysts were characterized by XRD （X-ray diffraction）, PSA （particle size analysis）, TPD （temperature programmed desorption） and SEM ...Lanthanum oxide impregnated large-pore zeolite catalysts were prepared. The catalysts were characterized by XRD （X-ray diffraction）, PSA （particle size analysis）, TPD （temperature programmed desorption） and SEM （scanning electron microscope）. The performances of the catalysts were investigated using the alkylation reaction of naphthalene with methanol. Under comparable conditions, the La-impregnated β-zeolite catalyst showed the highest catalytic activity among all the catalysts tested. The lower reaction temperature is favorable for the formation of 2,6-dimethyl naphthalene.展开更多
基金Supported by the Key Discipline Construction of 211 Project IV in China(No.1843202543)Research Innovation Program for College Graduates of Jiangsu Province(No.KYLX15_0728)Science and Technology Program of Jiangsu Province(No.BY2012003)
文摘A preparation process of 2-methylnaphthalene （2-MN） was proposed by isomerization, side-stream distillation and extractive distillation. The isomerization of alkyl naphthalene was catalyzed by acid-treated HBEA zeolites, and the 2-MN selectivity of isomerization was 92.70%. Side-stream distillation and extractive distillation were investigated by simulation, and effects of operation parameters on 2-MN were studied. Further, the simulated results were verified by experiment. Under the optimal condition, the mass fraction of 2-MN reached to 98.09%; in the oroduct, and the yield was 83.84% in refining orocess.
文摘Lanthanum oxide impregnated large-pore zeolite catalysts were prepared. The catalysts were characterized by XRD （X-ray diffraction）, PSA （particle size analysis）, TPD （temperature programmed desorption） and SEM （scanning electron microscope）. The performances of the catalysts were investigated using the alkylation reaction of naphthalene with methanol. Under comparable conditions, the La-impregnated β-zeolite catalyst showed the highest catalytic activity among all the catalysts tested. The lower reaction temperature is favorable for the formation of 2,6-dimethyl naphthalene.
