Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 303, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.micromeso.2020.110280
Keywords
SAPO-11; Microwave; Dry gel conversion; Grinding; Deoxygenation
Categories
Funding
- National Natural Science Foundation of China of China [21908123, 21978326]
- Taishan Scholar Program of Shandong [201511033]
- ChinaPostdoctoral Science Foundation [2019M662462]
- Key Technology Research and Development Program of Shandong Province [2018GSF117009]
- Natural Science Foundation of Shandong Province [ZR2019MB029]
- Shandong Doctoral Foundation [ZR2019BB048, ZR2019BCE023]
- State Key Laboratory of Heavy Oil Processing [SKLOP 201902006]
- Talent Fund of Shandong Collaborative Innovation Centre of Eco-Chemical Engineering [XTCXQN13, XTCXQN17]
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A grinding synthesis approach is employed to prepare water containing gel. SAPO-11G was successfully prepared by a dry gel conversion method using water containing gel assisted by microwave radiation (120-180 degrees C, 2 h). Compared to hydrothermal system, approach employed in the present study show green characters such as conservation of energy and time, low cost of organic filler, and reducing wastewater discharge. Deoxygenation of stearic acid shows that Ni/SAPO-11 catalysts have a high selectivity to paraffin and a low yield to cracking products. Ni/SAPO-11G has a comparable activity (conversion> 95%) with Ni/SAPO-11H molecular sieves. Coke deposition in SAPO-11G is lower than that in SAPO-11H due to a lower concentration of extra-framework aluminum species (i.e., Lewis acid sites). These results propose a rapid way to prepare zeolites in an environmental friendly route and are important to produce bio-diesel fractions via a deoxygenation reaction.
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