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https://hdl.handle.net/11147/2356
Title: | Hydrogenation of citral over Ni and Ni-Sn catalysts | Authors: | Aykaç, Hilal Yılmaz, Selahattin |
Keywords: | Citral Citronellal Hydrogenation Zeolites |
Issue Date: | Oct-2008 | Publisher: | TUBITAK | Source: | Aykaç, H., and Yılmaz, S. (2008). Hydrogenation of citral over Ni and Ni-Sn catalysts. Turkish Journal of Chemistry, 32(5), 623-633. | Abstract: | Liquid phase citral hydrogenation over zeolite-supported monometallic Ni and bimetallic Ni-Sn catalysts was studied. The zeolite support materials were Na-Y, Na-mordenite, and clinoptilolite. Ni and Sn contents of the monometallic and bimetallic catalysts were 8.1-9.2 wt% and 0.46 wt%, respectively. The type of the zeolite support affected the activity and selectivity of the catalysts differently. The main product of the citral hydrogenation reaction was citronellal, for both monometallic (84.5% yield) and bimetallic (44.5% yield) catalysts. The addition of promoter increased the selectivity to unsaturated alcohols (geraniol+nerol), i.e. it changed from 0.9% to 6.3% over mordenite and from 0.9% to 2.1% over Na-Y-supported catalysts. Furthermore, activity of the Ni catalysts decreased while the quantity of acetal remained almost constant. Intimate contact between active metal, promoter, and support, and a catalyst with a high concentration of weak acid sites gave high selectivity to geraniol+nerol. | URI: | http://hdl.handle.net/11147/2356 https://search.trdizin.gov.tr/yayin/detay/79495 |
ISSN: | 1300-0527 1300-0527 1303-6130 |
Appears in Collections: | Chemical Engineering / Kimya Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection TR Dizin İndeksli Yayınlar / TR Dizin Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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