Preparation of niobium-based oxygen carriers by polyol-mediated process and application to chemical-looping reforming
Source abstract
Abstract
New niobium-based oxygen carriers were prepared adopting polyol-mediated process. Four different polyols were used (diethylene glycol, triethylene glycol, tetraethylene glycol, and 1,2-propanediol) and four different quantities of water (0 mL, 1 mL, 10 mL, 30 mL, with a total volume of 80 mL of solution). Series of bulk and alumina-supported materials were prepared. Different structural and textural properties were obtained, depending on polyol type and hydrolysis ratio. After thermal treatment at 1000 °C, alumina-supported materials were evaluated in a lab-scaled fixed bed reactor. Despite a low conversion of methane due to a low content of active phase AlNbO4, they presented a high selectivity to syngas (a mixture of H2 and CO) during the first few seconds of reaction with CH4, indicating a high selectivity towards chemical-looping reforming process.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Chemical Looping and Thermochemical Processes · Advancements in Solid Oxide Fuel Cells · Catalysis and Oxidation Reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
Show source-provided references
1. Adanez J, Abad A, Garcia-Labiano F, Gayan P, de Diego L (2012) Progress in chemical-looping combustion and reforming technologies. Prog Energy Combust Sci 38:215–28210.1016/j.pecs.2011.09.001 ↗
2. Barbosa RD, Cruz GM, Santos PHLNA, Cortez GG, Rodrigues JAJ (2016) Nickel oxides supported on alumina as oxygen carriers for chemical-looping combustion and reforming of methane. Appl Mech Mater 830:30–3710.4028/www.scientific.net/AMM.830.30 ↗
3. Barzetti T, Selli E, Moscotti D, Forni L (1996) Pyridine and ammonia as probes for FTIR analysis of solid acid catalysts. J Chem Soc Faraday Trans 92:1401–140710.1039/ft9969201401 ↗
4. Brayner R, Bozon-Verduraz F (2003) Niobium pentoxide prepared by soft chemical routes: morphology, structure, defects and quantum size effect. Phys Chem Chem Phys 5:1457–173210.1039/b210055j ↗
5. Chun H, Kim D, Lim D, Lee W, Lee H (2010) A synthesis of CO-tolerant Nb2O5-promoted Pt/C catalyst for direct methanol fuel cell; its physical and electrochemical characterization. Int J Hydrog Energy 35:6399–640810.1016/j.ijhydene.2010.03.061 ↗
6. de Diego L, Gayán P, García-Labiano F, Celaya J, Abad A, Adánes J (2005) Impregnated CuO/Al2O3 oxygen carriers for chemical-looping combustion: avoiding fluidized bed agglomeration. Energy Fuel 19:1850–185610.1021/ef050052f ↗
7. Emeis CA (1993) Determination of integrated molar extinction coefficients for infrared absorption bands of pyridine adsorbed on solid acid catalysts. J Catal 141:347–35410.1006/jcat.1993.1145 ↗
8. Fiévet F, Brayner R (2013) The polyol process. In: Brayner R, Fiévet F, Cordin T (eds) Nanomaterial: a danger or a promise? Springer-Verlag, London, p 1–25
9. Gayán P, de Diego L, García-Labiano F, Adánez J, Abad A, Dueso C (2008) Effect of support on reactivity and selectivity of Ni-based oxygen carriers for chemical-looping combustion. Fuel 87:2641–265010.1016/j.fuel.2008.02.016 ↗
10. He J, Li Q, Fan Y (2013) Dispersion states and acid properties of SiO2-supported Nb2O5. J Solid State Chem 202:121–12710.1016/j.jssc.2013.03.040 ↗
11. IUPAC Recommendations (1985) Pure Appl Chem 57:60310.1351/pac198557040603 ↗
12. IUPAC Recommendations (1994) Pure Appl Chem 66:173
13. Kitano T, Shishido T, Teramura K, Tanaka T (2012) Brønsted acid property of alumina-supported niobium oxide calcined at high temperatures: characterization by acid-catalyzed reactions and spectroscopic methods. J Phys Chem C 116:11615–1162510.1021/jp3032429 ↗
14. Ko E, Weissman J (1990) Structures of niobium pentoxide and their implications on chemical behavior. Catal Today 8:27–3610.1016/0920-5861(90)87005-N ↗
15. Kvamsdal M, Jordal K, Bolland O (2007) A quantitative comparison of gas turbine cycles with CO2 capture. Energy 32:10–2410.1016/j.energy.2006.02.006 ↗
16. Li J, Lu G, Li K, Wang W (2004) Active Nb2O5-supported nickel and nickel-copper catalysts for methane decomposition to hydrogen and filamentous carbon. J Mol Catal A Chem 221:105–11210.1016/j.molcata.2004.06.015 ↗
17. Li Y, Yan S, Yang W, Xie Z, Chen Q, Yue B, He H (2005) Effects of support modification on Nb2O5/alpha-Al2O3 catalyst for ethylene oxide hydration. J Mol Catal A Chem 226:285–29010.1016/j.molcata.2004.10.047 ↗
18. Li S, Xu Q, Uchaker E, Cao X, Cao G (2016) Comparison of amorphous, pseudohexagonal and orthorhombic Nb2O5 for high-rate lithium ion insertion. Crystal Eng Comm 18:2532–254010.1039/C5CE02069G ↗
19. Miracca I, Asen KAJ, Coulter C, Curran L, Lowe C, Moure G, Shlasner S (2009) The CO2 capture project (CCP): results from phase II (2004-2009). Energy Procedia 1:55–6210.1016/j.egypro.2009.01.010 ↗
20. Mozer T, Passos F (2011) Selective CO oxidation on cu promoted Pt/Al2O3 and Pt/Nb2O5 catalysts. Int J Hydrog Energy 36:13369–1337810.1016/j.ijhydene.2011.08.011 ↗
21. Nowak I, Ziolek M (1999) Niobium compounds: preparetion, characterization, and application in heterogeneous catalysis. Chem Rev 99:3603–362410.1021/cr9800208 ↗
22. Pröll T, Bolhàr-Nordenkampf J, Kolbitsch P, Hofbauer H (2010) Syngas and a separate nitrogen/argon stream via chemical-looping reforming - a 140kW pilot plant study. Fuel 89:1249–125610.1016/j.fuel.2009.09.033 ↗
23. Tanabe K (2003) Catalytic application of niobium compounds. Catal Today 78:65–7710.1016/S0920-5861(02)00343-7 ↗
24. Zafar Q, Mattisson T, Gevert B (2005) Integrated hydrogen and power production with CO2 capture using chemical-looping reforming - redox reactivity of particles of CuO, Mn2O3, NiO, and Fe2O3 using SiO2 as a support. Ind Eng Chem Res 44:3485–349610.1021/ie048978i ↗
25. Zafar Q, Mattisson T, Gevert B (2006) Redox investigation of transition-state metals Ni, Cu, Fe and Mn supported on SiO2 and MgAl2O4. Energy Fuel 20:34–4410.1021/ef0501389 ↗
26. Zhao Y, Zhou X, Ye L, Tsang S (2012) Nanostructured Nb2O5 catalysts. Nano Reviews 3:17631-.1764210.3402/nano.v3i0.17631 ↗
27. Ziolek M (2003) Niobium-containing catalysts - the state of the art. Catal Today 78:47–6410.1016/S0920-5861(02)00340-1 ↗