文献类型：期刊文献

中文题名：Ni_(x)ReRu@C催化剂催化脂肪酸甲酯加氢性能

英文题名：Hydrogenation Performance of Fatty Acid Methyl Ester by Ni_(x)ReRu@C Catalysts

作者：赵佳平[1] 刘朋[1] 李静[1] 夏海虹[1] 王瑞珍[1] 徐俊明[1] 蒋剑春[1]

第一作者：赵佳平

机构：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏省林业资源高效加工利用协同创新中心,江苏南京210042

年份：2025

卷号：45

期号：5

起止页码：111-117

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金资助项目(32301548)。

语种：中文

中文关键词：油脂;生物柴油;低温催化;烷烃

外文关键词：bio-oils;biodiesel;low-temperature catalysis;alkane

分类号：TQ35

摘要：按照Ni/Re不同物质的量比值x(x=0.1,0.25,0.4和0.5),制备了Ni_(x)ReRu@C多金属催化剂,使用X射线衍射(XRD)、X射线光电子能谱(XPS)及NH3程序升温吸附(NH_(3)-TPD)法对其结构进行表征,探讨了催化剂组成、催化剂用量、反应时间、反应温度及H_(2)压力对催化硬脂酸甲酯加氢性能的影响。研究结果表明:制备的催化剂中主要含有Ni和Re氧化物,具有大量弱酸性和中酸性位点。在反应温度180℃、反应时间4 h、H_(2)压力3 MPa及催化剂用量30%的条件下,Ni_(0.25)ReRu@C催化硬脂酸甲酯加氢的转化率为100%,且产物中十七烷(C_(17))和十八烷(C_(18))的选择性超过98%。Ni_(0.25)ReRu@C催化剂在循环使用11次后对硬脂酸甲酯的转化率仍可达到100%,并且对油酸甲酯、棕榈酸甲酯和月桂酸甲酯均具有优异的催化活性,转化率分别为88.16%、97.63%和100%。硬脂酸甲酯加氢反应主要通过加氢脱羰(HDC)和加氢脱氧(HDO)路径。
Ni_(x)ReRu@C polymetallic catalyst was prepared by controlling the molar ratio x(x=0.1,0.25,0.4 and 0.5)of Ni/Re which was characterized using X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and NH_(3)-temperature programmed desorption(NH_(3)-TPD).The results revealed that the catalyst predominantly consisted of nickel and rhenium oxides,along with a substantial number of weakly to moderately acidic sites.The effects of catalyst composition,dosage,reaction time,reaction temperature and H_(2)pressure on the hydrogenation performance of methyl stearate were discussed.The results demonstrated that under the conditions of a reaction temperature of 180℃,a reaction time of 4 h,and an H_(2)pressure of 3 MPa,the conversion rate of methyl stearate reached 100%,with a selectivity exceeding 98%for heptadecane(C_(17))and octadecane(C_(18))in the product.Ni_(0.25)ReRu@C catalyst exhibited a consistent catalytic conversion rate of 100%even after undergoing 11 cycles,demonstrating its exceptional performance in the conversion of methyl oleate,methyl palmitate,and methyl laurate.The primary reaction pathways of methyl stearate hydrogenation encompassed hydrodecarbonylation(HDC)and hydrodeoxygenation(HDO).