Relation between surface acidity and reactivity in fructose conversion into 5-HMF using tungstated zirconia catalysts
Само за регистроване кориснике
2013
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Catalytic dehydration of fructose and its conversion to 5-hydroxymethylfurfural was studied using tungstated zirconia oxides, with various tungsten oxide loadings (1-20 wt.%). The samples were prepared by incipient wetness impregnation and thoroughly characterized using a combination of different techniques: structural, thermal and calorimetric analyses. Zirconia was predominantly present in the investigated samples in the tetragonal phase when the WO3 loading was above 10 wt.%. The samples exhibited amphoteric characteristics, as they adsorbed both ammonia and sulfur dioxide on their surface. The number of surface acid sites increased with increasing WO3 content. Fructose dehydration tests evidenced the formation of 5-hydroxymethylfurfural and by-products (formic and levulinic acids). The results show that the ratio of basic to acidic sites of the solid catalysts is the key parameter for the selectivity in 5-HMF, while the global fructose conversion was mainly related to the presence ...of acid sites of a given strength with 150 > Q(diff) > 100 kJ.mol(NH3)(-1).
Кључне речи:
Tungsten oxide / Zirconia supported catalysts / Surface acidity/basicity / Adsorption microcalorimetry / Catalytic fructose dehydrationИзвор:
Catalysis Communications, 2013, 30, 5-13Издавач:
- Elsevier, Amsterdam
DOI: 10.1016/j.catcom.2012.10.005
ISSN: 1566-7367
WoS: 000314433100002
Scopus: 2-s2.0-84868600056
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Kourieh, R. AU - Rakić, Vesna AU - Bennici, Simona AU - Auroux, Aline PY - 2013 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/3297 AB - Catalytic dehydration of fructose and its conversion to 5-hydroxymethylfurfural was studied using tungstated zirconia oxides, with various tungsten oxide loadings (1-20 wt.%). The samples were prepared by incipient wetness impregnation and thoroughly characterized using a combination of different techniques: structural, thermal and calorimetric analyses. Zirconia was predominantly present in the investigated samples in the tetragonal phase when the WO3 loading was above 10 wt.%. The samples exhibited amphoteric characteristics, as they adsorbed both ammonia and sulfur dioxide on their surface. The number of surface acid sites increased with increasing WO3 content. Fructose dehydration tests evidenced the formation of 5-hydroxymethylfurfural and by-products (formic and levulinic acids). The results show that the ratio of basic to acidic sites of the solid catalysts is the key parameter for the selectivity in 5-HMF, while the global fructose conversion was mainly related to the presence of acid sites of a given strength with 150 > Q(diff) > 100 kJ.mol(NH3)(-1). PB - Elsevier, Amsterdam T2 - Catalysis Communications T1 - Relation between surface acidity and reactivity in fructose conversion into 5-HMF using tungstated zirconia catalysts EP - 13 SP - 5 VL - 30 DO - 10.1016/j.catcom.2012.10.005 ER -
@article{ author = "Kourieh, R. and Rakić, Vesna and Bennici, Simona and Auroux, Aline", year = "2013", abstract = "Catalytic dehydration of fructose and its conversion to 5-hydroxymethylfurfural was studied using tungstated zirconia oxides, with various tungsten oxide loadings (1-20 wt.%). The samples were prepared by incipient wetness impregnation and thoroughly characterized using a combination of different techniques: structural, thermal and calorimetric analyses. Zirconia was predominantly present in the investigated samples in the tetragonal phase when the WO3 loading was above 10 wt.%. The samples exhibited amphoteric characteristics, as they adsorbed both ammonia and sulfur dioxide on their surface. The number of surface acid sites increased with increasing WO3 content. Fructose dehydration tests evidenced the formation of 5-hydroxymethylfurfural and by-products (formic and levulinic acids). The results show that the ratio of basic to acidic sites of the solid catalysts is the key parameter for the selectivity in 5-HMF, while the global fructose conversion was mainly related to the presence of acid sites of a given strength with 150 > Q(diff) > 100 kJ.mol(NH3)(-1).", publisher = "Elsevier, Amsterdam", journal = "Catalysis Communications", title = "Relation between surface acidity and reactivity in fructose conversion into 5-HMF using tungstated zirconia catalysts", pages = "13-5", volume = "30", doi = "10.1016/j.catcom.2012.10.005" }
Kourieh, R., Rakić, V., Bennici, S.,& Auroux, A.. (2013). Relation between surface acidity and reactivity in fructose conversion into 5-HMF using tungstated zirconia catalysts. in Catalysis Communications Elsevier, Amsterdam., 30, 5-13. https://doi.org/10.1016/j.catcom.2012.10.005
Kourieh R, Rakić V, Bennici S, Auroux A. Relation between surface acidity and reactivity in fructose conversion into 5-HMF using tungstated zirconia catalysts. in Catalysis Communications. 2013;30:5-13. doi:10.1016/j.catcom.2012.10.005 .
Kourieh, R., Rakić, Vesna, Bennici, Simona, Auroux, Aline, "Relation between surface acidity and reactivity in fructose conversion into 5-HMF using tungstated zirconia catalysts" in Catalysis Communications, 30 (2013):5-13, https://doi.org/10.1016/j.catcom.2012.10.005 . .