CN113546608A - 基于改性活性炭纤维和改性二氧化硅的除臭剂及制备方法 - Google Patents
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Abstract
本发明提供一种基于改性活性炭纤维和改性二氧化硅的除臭剂及制备方法;用质量浓度为10%的硫酸铵溶液对活性炭纤维进行金属离子负载,然后对负载后的活性炭纤维进行热处理得到改性活性炭纤维;将多孔二氧化硅材料和四亚乙基五胺混合,再加入甲醇溶解,连续搅拌10h后放置80℃环境中干燥12h,得到改性二氧化硅;将上述制得的改性聚丙烯腈基活性炭纤维和改性二氧化硅混合,放入50℃环境干燥2h即可制得除臭剂。本发明工艺简单,获得的产品除臭剂除臭效果明显。
Description
技术领域
本发明涉及废气处理技术领域,尤其涉及基于改性活性炭纤维和改性二氧化硅的除臭剂及制备方法。
背景技术
随着近年来农业、工业及重工业的快速发展,各行业在实现飞速增长的同时,也带来了诸多环境方面的问题,其中氨气(NH3)和硫化氢(H2S)作为异味气体的主要组成部分,农业生产,橡胶工业及食品工业均会产生大量氨气和硫化氢,如果不能将这些有害气体妥善处理,势必会对环境和人体健康造成威胁,因此除氨气和硫化氢一直是工业除臭方面的研究重点。
发明内容
本发明旨在提供一种高效的工业除臭材料的制备方法,通过对活性炭纤维和二氧化硅两种传统的吸附材料进行改性,获得吸附能力的更强的吸附材料,主要应用于工业除臭,降低工业污染等领域。
具体的技术方案为:
基于改性活性炭纤维和改性二氧化硅的除臭剂的制备方法,包括以下步骤:
采用质量浓度为10%的硫酸铵溶液对活性炭纤维进行金属离子负载,然后对负载后的活性炭纤维在160℃条件下热处理得到改性活性炭纤维,由于活性炭表面的含氮和含氧官能团多少决定了原本材料的酸碱度和极性,而这两者又极大程度影响了活性炭纤维的吸附性能,将硫酸铵负载于活性炭纤维表面,增强了纤维表面的极性,后续的热处理则相应提高了纤维表面的含氮和含氧量;
将多孔二氧化硅材料和四亚乙基五胺按照质量1:1的比例混合,再加入甲醇溶解,连续搅拌10h后放置80℃环境中干燥12h,得到改性二氧化硅;由于多孔二氧化硅材料本身高比表面积,表面易改性等特性,四亚乙基五胺可以将材料表面氨基官能化改性,进而增加其表面的吸附能力;
将上述制得的改性聚丙烯腈基活性炭纤维和改性二氧化硅按照质量比2:1混合,放入50℃环境干燥2h即可制得除臭剂。
所述的活性炭纤维为聚丙烯腈基活性炭纤维。
本发明工艺简单,获得的产品除臭剂除臭效果明显。
附图说明
图1a为实施例未改性活性炭纤维;
图1b为实施例改性活性炭纤维;
图2为实施例不同材料除臭效果对比。
具体实施方式
结合实施例说明本发明的具体技术方案。
基于改性活性炭纤维和改性二氧化硅的除臭剂的制备方法,包括以下步骤:
选择的活性炭纤维为聚丙烯腈基活性炭纤维;采用质量浓度为10%的硫酸铵溶液对活性炭纤维进行金属离子负载,然后对负载后的活性炭纤维在160℃条件下热处理得到改性活性炭纤维;
由图1a和图1b可以看出改性前活性炭纤维表面较为粗糙,且吸附孔洞稀疏,很大程度的限制了纤维表面的吸附能力,而改性后负载金属离子后的活性炭纤维表面则更加平整光滑,孔洞的数量也显著增加,活性炭纤维的吸附能力也得到了增强。
将多孔二氧化硅材料和四亚乙基五胺按照质量1:1的比例混合,再加入甲醇溶解,连续搅拌10h后放置80℃环境中干燥12h,得到改性二氧化硅;
将上述制得的改性聚丙烯腈基活性炭纤维和改性二氧化硅按照质量比2:1混合,放入50℃环境干燥2h即可制得除臭剂。
对实施例获得的材料进行性能检测。
检测对象:实施例获得的基于改性活性炭纤维和改性二氧化硅的除臭剂;未改性活性炭纤维;未改性二氧化硅;
需要的试剂和仪器:可封闭玻璃箱;氨水(25%);固相微萃取头(粉色65μm PDMS/DVB,Stable Flex,23Ga,3pk,美国Supelco公司);456GC-TQ固相微萃取-气相色谱-串联质谱联用仪(美国Bruker公司)。
检测方法:
取等量的基于改性活性炭纤维和改性二氧化硅的除臭剂、未改性活性炭纤维、未改性二氧化硅以及未改性活性炭纤维和未改性二氧化硅混合物(质量比2:1)分别置于玻璃箱角落,然后在玻璃箱中心放入盛有少量氨水的烧杯,封闭玻璃箱0.5h、1h、1.5h、2h、2.5h、3h后将基于改性活性炭纤维和改性二氧化硅的除臭剂、未改性活性炭纤维、未改性二氧化硅取出,然后利用固相微萃取装置的吸附和脱附功能测定三种材料的除臭能力,结果如图1所示,测试出的材料氨气浓度越高则说明该种材料的除臭能力越强。
图2可以看出基于改性活性炭纤维和改性二氧化硅的除臭剂在不同时间的除臭效果均优于其它三种未改性材料,并且在1.5h后达到饱和状态,并且在饱和后浓度下降程度较低,说明饱和后发生解吸附的程度较低,所以本发明制成的除臭剂除臭效果明显。
Claims (6)
1.基于改性活性炭纤维和改性二氧化硅的除臭剂的制备方法,其特征在于,包括以下步骤:
用质量浓度为10%的硫酸铵溶液对活性炭纤维进行金属离子负载,然后对负载后的活性炭纤维进行热处理得到改性活性炭纤维;
将多孔二氧化硅材料和四亚乙基五胺混合,再加入甲醇溶解,连续搅拌10h后放置80℃环境中干燥12h,得到改性二氧化硅;
将上述制得的改性聚丙烯腈基活性炭纤维和改性二氧化硅混合,放入50℃环境干燥2h即可制得除臭剂。
2.根据权利要求1所述的基于改性活性炭纤维和改性二氧化硅的除臭剂的制备方法,其特征在于,所述的活性炭纤维为聚丙烯腈基活性炭纤维。
3.根据权利要求1所述的基于改性活性炭纤维和改性二氧化硅的除臭剂的制备方法,其特征在于,负载后的活性炭纤维在160℃条件下热处理。
4.根据权利要求1所述的基于改性活性炭纤维和改性二氧化硅的除臭剂的制备方法,其特征在于,所述的多孔二氧化硅材料和四亚乙基五胺按照质量1:1的比例混合。
5.根据权利要求1所述的基于改性活性炭纤维和改性二氧化硅的除臭剂的制备方法,其特征在于,所述的改性聚丙烯腈基活性炭纤维和改性二氧化硅按照质量比2:1混合。
6.基于改性活性炭纤维和改性二氧化硅的除臭剂,其特征在于,根据权利要求1到5任一项所述的制备方法所得。
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