Effect of Olefins on Desulfurization Mechanism of Thiophene Adsorption on Active Site Species of Mesoporous Molecular Sieve Al-MCM41
Journal Title: Progress in Energy & Fuels - Year 2013, Vol 2, Issue 1
Abstract
The Al-MCM-41 and Molecular Sieve with different aluminum loadings were prepared by post grafting method. Characterization of Molecular Sieves by XRD, N2 Adsorption- Desorption NH3-TPD, Py-FTIR and other methods. Evaluation of Thiophene Adsorption Performance by Fixed Bed. By correlating the thiophene adsorption capacity of molecular sieves with the acid properties and texture properties of molecular sieves, examine the influence of olefin presence on Al-MCM-41 and Adsorption and Desulfurization Mechanism of Active Site Species. The results show that the introduction of aluminum species produces B-type acid center, as well as two types of L acid center, L1 and L2. The introduction of low content aluminum species is beneficial to the formation of Btype acid centers and L1-type acid centers, while the introduction of high content aluminum species is beneficial to the formation of L2-type acid centers. Among them, L2-type acid center has the best adsorption effect on Thiophene. Olefins and thiophenes undergo competitive adsorption and catalytic conversion reactions at B and acid centers, and catalytic conversion reactions dominate. The existence of L2 acid center promotes the catalytic conversion reaction on the B acid center, and the generated macromolecular sulfide replaces thiophene to be adsorbed on the molecular sieve acid active center, thus improving the saturated sulfur adsorption capacity of Al-MCM-41 molecular sieve.
Authors and Affiliations
Hongshen Wang
Keywords
Related Articles
- EP ID EP680168
- DOI -
- Views 137
- Downloads 0
The battle between biofuels and food -example in the United States
In recent years, the market for major clothing products has seen a significant price fluctuation in the overall balance of supply and demand in the year,Even in case of slightly greater than request,price goes up.on this...
Development and application of hydrogen energy and fuel cell vehicle
hydrogen energy is currently,continued growth in global energy demand and dwindling fossil fuel resource reserves,and environmental security issues are gradually highlighted,makes it possible to create a clean and sustai...
The existing problems of MSW incineration power generation and new technology development
Garbage Incineration is one of the most important ways to deal with waste effectively at home and abroad,But garbage is burned directly to the environment creates harm.convert an unclassified urban living garbage to a hi...
Effect of Olefins on Desulfurization Mechanism of Thiophene Adsorption on Active Site Species of Mesoporous Molecular Sieve Al-MCM41
The Al-MCM-41 and Molecular Sieve with different aluminum loadings were prepared by post grafting method. Characterization of Molecular Sieves by XRD, N2 Adsorption- Desorption NH3-TPD, Py-FTIR and other methods. Evaluat...
Discussion on new Clean energy fuel cell
fuel cells have unusual performance:Clean and efficient,power efficiency up to 60% above,and can be serviced with partial load running,there is virtually no except for low carbon oxides emissions Harmful emissions.The ar...