Aliana-Nasharuddin N, Asikin-Mijan N, Abdulkareem-Alsultan G, Saiman Mohd Izham, Alharthi Fahad A, Alghamdi Abdulaziz Ali, Taufiq-Yap Y H
Catalysis Science and Technology Research Centre (PutraCAT), Faculty of Science, Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia
Department of Chemistry, Faculty of Science, Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia.
RSC Adv. 2020 Jan 2;10(2):626-642. doi: 10.1039/c9ra08409f.
Deoxygenation processes that exploit milder reaction conditions under H-free atmospheres appear environmentally and economically effective for the production of green diesel. Herein, green diesel was produced by catalytic deoxygenation of chicken fat oil (CFO) over oxides of binary metal pairs (Ni-Mg, Ni-Mn, Ni-Cu, Ni-Ce) supported on multi-walled carbon nanotubes (MWCNTs). The presence of Mg and Mn with Ni afforded greater deoxygenation activity, with hydrocarbon yields of >75% and -(C + C) selectivity of >81%, indicating that decarboxylation/decarbonylation (deCOx) of CFO is favoured by the existence of high amount of lower strength strong acidic sites along with noticeable strongly basic sites. Based on a series of studies of different Mg and Mn dosages (5-20 wt%), the oxygen free-rich diesel-range hydrocarbons produced efficiently by Ni-Mg/MWCNT and Ni-Mn/MWCNT catalysts yielded >84% of hydrocarbons, with -(C + C) selectivity of >85%. The heating value of the green diesel obtained complied with the ultra-low sulphur diesel standard.
在无氢气氛下利用较温和反应条件的脱氧工艺，对于绿色柴油的生产而言，在环境和经济方面似乎都很有效。在此，通过在多壁碳纳米管（MWCNTs）负载的二元金属对（Ni-Mg、Ni-Mn、Ni-Cu、Ni-Ce）氧化物上对鸡脂肪油（CFO）进行催化脱氧来生产绿色柴油。Ni与Mg和Mn的存在提供了更高的脱氧活性，烃产率>75%，-(C + C)选择性>81%，这表明CFO的脱羧/脱羰（deCOx）受到大量较低强度强酸性位点以及明显强碱性位点的存在的促进。基于一系列不同Mg和Mn用量（5 - 20 wt%）的研究，由Ni-Mg/MWCNT和Ni-Mn/MWCNT催化剂高效生产的无氧富柴油范围烃类的产率>84%，-(C + C)选择性>85%。所获得的绿色柴油的热值符合超低硫柴油标准。
