磁性纳米碳固体酸催化剂合成及用于生物柴油制备
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- 英文论文题名：Magnetic nano-carbonaceous acid catalyst was synthesized and used for biodiesel production
- 论文作者：张帆 ; 方真 ; 王一同 ; 苏同超 ; 李靖 ; 杨星霞
- 英文论文作者：Fan Zhang ; Zhen Fang ; Yi-Tong Wang ; Tong-chao Su ; Jing Li ; Xing-xia Yang ; Xishuangbanna Tropical Botanical Garden ; Chinese Academy of Sciences ; University of Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院西双版纳热带植物园中国科学院热带植物资源可持续利用重点实验室生物能源组;中国科学院大学;
- 论文关键词：纳米碳 ; 磁性固体酸 ; 酯化反应 ; 酯交换反应 ; 生物柴油
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十九分会：纳米碳材料
- 语种：中文
- 分类号：O643.36;TE667
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十九分会 ; 纳米碳材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：120k
- 原文格式：D
- 会议级别：全国
摘要
利用葡萄糖和氯化铁水溶液在180oC条件下两次水热沉淀及在400-800oC条件下高温热解,然后再利用H_2SO_4在150oC条件下磺化的新方法,合成了一种新型的AC-SO_3H@Fe/C催化剂。催化剂的晶型、磁饱和度、形貌、比表面积、孔容积官能团、热稳定性、元素组成和总酸度通过多种表征手段进行分析。通过单因素实验表明在600oC条件下的高温热解可以获得同时具有较高的酸度(2.79 mmol/g)和较强的磁饱和度(14.4Am~2/kg)且可以直接用于高酸值的小桐子油合成生物柴油的碳基磁性固体酸(AC-600-SO_3H@Fe/C)催化剂。在200oC条件下催化合成的生物柴油得率为90.5%,循环3次生物柴油得率均在90%以上且催化剂回收率为96.3%。该催化剂直接用于酯化和转酯化无预处理的高酸值油脂获得高得率的生物柴油且循环3次后无明显失活。利用木质纤维素水解液为碳源,在最优催化剂制备条件下合成的AC-600-SO_3H@Fe/JHC催化剂与AC-600-SO_3H@Fe/C相比,前者催化剂表面分布着50-500 nm左右大小的突触,具有略低的磁饱和度(11.2 Am~2/kg),但拥有更大的比表面积(99.6 m~2/g)和酸度(2.96 mmol/g),在相同的反应条件下催化高酸值小桐子油合成生物柴油得率达到94.6%。
A novel magnetic carbonaceous acid catalyst was synthesized from glucose(or lignocellulosic hydrolyzates) and iron chloride by a new method of double hydrothermal precipitation at 180 ℃ and pyrolysis at 400-800 ℃, and subsequent sulfonation at 150℃. Its crystalline phases, magnetic saturation(Ms), morphology, specific surface area, pore volume, functional groups, thermal stability, elemental composition and total acid density were analyzed with various techniques. It was found that catalyst carbonized at 600 ℃(AC-600-SO_3H@Fe/C) had high acid density(2.79 mmol/g) and strong magnetism(Ms: 14.4 Am~2/kg) for direct production of biodiesel from Jatropha oil with high acid value by single-factor optimization. With the catalyst, 90.5% biodiesel yield was achieved at 200 ℃ with 3 cycles(>90% yield) and 96.3% catalyst recovery rate. The magnetic catalyst directly esterified and transesterified high acid value oil without pretreatment with high biodiesel yield and easily separated for three recycles with little deactivation.
A novel magnetic carbonaceous acid catalyst was synthesized from glucose(or lignocellulosic hydrolyzates) and iron chloride by a new method of double hydrothermal precipitation at 180 ℃ and pyrolysis at 400-800 ℃, and subsequent sulfonation at 150℃. Its crystalline phases, magnetic saturation(Ms), morphology, specific surface area, pore volume, functional groups, thermal stability, elemental composition and total acid density were analyzed with various techniques. It was found that catalyst carbonized at 600 ℃(AC-600-SO_3H@Fe/C) had high acid density(2.79 mmol/g) and strong magnetism(Ms: 14.4 Am~2/kg) for direct production of biodiesel from Jatropha oil with high acid value by single-factor optimization. With the catalyst, 90.5% biodiesel yield was achieved at 200 ℃ with 3 cycles(>90% yield) and 96.3% catalyst recovery rate. The magnetic catalyst directly esterified and transesterified high acid value oil without pretreatment with high biodiesel yield and easily separated for three recycles with little deactivation.
引文
[1]Zhang F.,Fang Z.,Wang Y.T.Fuel,2015:150,370-377.
[2]Zhang F.,Fang Z.,Wang Y.T.Applied Energy,2015,155:637-647.
[3]张帆,方真.用于生物燃料制备的可分离回收磁性催化剂反应釜,中国专利,ZL 201220038727.5.
[2]Zhang F.,Fang Z.,Wang Y.T.Applied Energy,2015,155:637-647.
[3]张帆,方真.用于生物燃料制备的可分离回收磁性催化剂反应釜,中国专利,ZL 201220038727.5.