CN105983327B - 一种甲醛清除剂的制备方法 - Google Patents
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Abstract
本发明公开了一种甲醛清除剂的制备方法,其技术方案包括:首先,在一定量浓硝酸中依次加入有机钛酸盐、硝酸锌以及氯化锡,剧烈搅拌,得到溶液A;其次,在一定量水中,加入表面活性剂萘磺酸钠、助剂聚乙二醇以及氧化石墨烯,水浴升温、搅拌,得到溶液B;然后,将溶液B倒入溶液A中,水浴控温,混合静置一段时间后,得到溶液C;再次,将溶液C自然冷却至室温,滴加液碱溶液调节溶液pH值至中性,经过滤、去离子水洗涤得到滤饼D;最后,将滤饼D溶于一定量水中,加入尿素和茶多酚,搅拌一段时间后,超声分散,制得甲醛去除剂溶液E。该甲醛去除剂综合催化分解、氧化还原、封闭封堵等机理,能有效去除甲醛。
Description
技术领域
本发明涉及环保净化剂技术领域,具体涉及一种甲醛清除剂的制备方法。
背景技术
甲醛,是一种无色气体,有特殊刺激性气味,对人体具有严重的危害性,例如:刺激人的皮肤、呼吸道、致突变性、致癌变等。目前已经引起了人类广泛的重视,但是在日常生活中,甲醛普遍存在于装修、装饰材料中,与人们生活密切相关,去除材料中的甲醛已成为一种必然趋势。
甲醛清除剂的作用原理通常包括中和反应类、催化分解类、氧化还原类、封闭封堵类。大多数专利通常是采用其中的一种机理,例如:CN 105727494A以聚葵二酸葵二胺、聚丙烯酰胺、植物提取液为有效成份,制备了甲醛清除剂;CN 101274281 A报道了一种室温去除空气中甲醛催化剂及其制备方法,将甲醛氧化为H2O和CO2。
因此,寻找一种绿色、环保、高效的甲醛清除剂,已成为环保材料领域的一种迫切需求。
发明内容
本发明的目的在于:提供一种甲醛去除剂及其制备方法,结合无机材料的优良性质及有机化学改性技术,快速批量制备复合二氧化钛、氧化锌、氧化锡、氧化石墨烯、表面活性剂萘磺酸钠、聚乙二醇、茶多酚、聚乙烯醇以及尿素的甲醛去除剂。
本发明的技术方案:首先,在一定量浓硝酸中依次加入有机钛酸盐、硝酸锌以及氯化锡,剧烈搅拌,得到溶液A;其次,在一定量水中,加入表面活性剂萘磺酸钠、助剂聚乙二醇以及氧化石墨烯,水浴升温、搅拌,得到溶液B;然后,将溶液B倒入溶液A中,水浴控温,混合静置一段时间后,得到溶液C;再次,将溶液C自然冷却至室温,滴加液碱溶液调节溶液pH值至中性,经过滤、去离子水洗涤得到滤饼D;最后,将滤饼D溶于一定量水中,加入尿素和茶多酚,搅拌一段时间后,超声分散,制得甲醛去除剂溶液E。
本发明与现有技术相比,具有显著优点:其一、该甲醛去除剂以氧化石墨烯为吸附剂,对甲醛具有较强吸附能力;其二、该甲醛去除剂复合了氧化钛、氧化锌、氧化锡,尿素和茶多酚,能有效去除甲醛;其三、该甲醛去除剂使用便携,应用范围广泛。
具体实施方式
下面结合具体实施例说明本发明的技术解决方案,这些实施例不能理解为对技术方案的限制。
实施例1:依以下具体步骤制备一种甲醛清除剂。
步骤1、在100mL60%浓度硝酸中,依次加入90g钛酸丁酯、4.8g六水合硝酸锌以及0.15g氯化锡,剧烈搅拌2h,得到溶液A;
步骤2、在100mL水中,加入2.8g表面活性剂α-萘磺酸钠、0.9g助剂聚乙二醇以及0.5g氧化石墨烯,水浴升温至60oC、搅拌1h,得到溶液B;
步骤3、将溶液B倒入溶液A中,水浴控温60oC,混合静置24h,得到溶液C;
步骤4、将溶液C自然冷却至室温,滴加质量浓度30%的液碱溶液,调节溶液pH值至中性,经过滤、去离子水洗涤两遍,得到滤饼D;
步骤5、将50g滤饼D溶于1000mL水中,加入5g尿素和10g茶多酚,搅拌1h后,超声分散3h,制得甲醛去除剂溶液E。
实施例2:依以下具体步骤制备一种甲醛清除剂。
步骤1、在100mL60%浓度硝酸中,依次加入90g钛酸丁酯、9.6g六水合硝酸锌以及0.3g氯化锡,剧烈搅拌4h,得到溶液A;
步骤2、在100mL水中,加入4.6g表面活性剂β-萘磺酸钠、2.8g助剂聚乙二醇以及1.5g氧化石墨烯,水浴升温至80oC、搅拌2h,得到溶液B;
步骤3、将溶液B倒入溶液A中,水浴控温80oC,混合静置48h,得到溶液C;
步骤4、将溶液C自然冷却至室温,滴加质量浓度30%的液碱溶液,调节溶液pH值至中性,经过滤、去离子水洗涤两遍,得到滤饼D;
步骤5、将80g滤饼D溶于1000mL水中,加入10g尿素和20g茶多酚,搅拌2h后,超声分散6h,制得甲醛去除剂溶液E。
实施例3:依以下具体步骤制备一种甲醛清除剂。
步骤1、在100mL60%浓度硝酸中,依次加入90g钛酸丁酯、6g六水合硝酸锌以及0.2g氯化锡,剧烈搅拌3h,得到溶液A;
步骤2、在100mL水中,加入3.5g表面活性剂β-萘磺酸钠、2.0g助剂聚乙二醇以及1.2g氧化石墨烯,水浴升温至70oC、搅拌1.5h,得到溶液B;
步骤3、将溶液B倒入溶液A中,水浴控温70oC,混合静置36h,得到溶液C;
步骤4、将溶液C自然冷却至室温,滴加质量浓度30%的液碱溶液,调节溶液pH值至中性,经过滤、去离子水洗涤两遍,得到滤饼D;
步骤5、将60g滤饼D溶于1000mL水中,加入7g尿素和20g茶多酚,搅拌1.5h后,超声分散4h,制得甲醛去除剂溶液E。
Claims (4)
1.一种甲醛清除剂的制备方法,其特征在于包含以下步骤:
第一步、在一定量质量浓度为60%的浓度硝酸中,依次加入钛酸丁酯、六水合硝酸锌以及氯化锡,剧烈搅拌2h-4h,得到溶液A;
第二步、在一定量水中,加入表面活性剂萘磺酸钠、助剂聚乙二醇以及氧化石墨烯,水浴升温至60oC-80oC、搅拌1h-2h,得到溶液B;
第三步、将溶液B倒入溶液A中,水浴控温60oC-80oC,混合静置24h-48h,得到溶液C;
第四步、将溶液C自然冷却至室温,滴加质量浓度30%的液碱溶液,调节溶液pH值至中性,经过滤、去离子水洗涤两遍,得到滤饼D;
第五步、将滤饼D溶于一定量水中,加入尿素和茶多酚,搅拌1h-2h后,超声分散3h-6h,制得甲醛去除剂溶液E。
2.根据权利要求1所述的一种甲醛清除剂的制备方法,其特征在于:溶液A中,钛酸丁酯占浓硝酸的摩尔比为20%,六水合硝酸锌占钛酸丁酯的摩尔比为3%-6%,氯化锡占钛酸丁酯的摩尔比为1.5%-3%。
3.根据权利要求1所述的一种甲醛清除剂的制备方法,其特征在于:溶液B中,萘磺酸钠任选α-萘磺酸钠或β-萘磺酸钠,其占钛酸丁酯的质量比为3%-5%,聚乙二醇占钛酸丁酯的质量比为1%-3%,氧化石墨烯占钛酸丁酯的质量比为0.5%-1.5%。
4.根据权利要求1所述的一种甲醛清除剂的制备方法,其特征在于:溶液E中,滤饼D占水的质量比为5%-8%,尿素和茶多酚分别占水的质量比为0.5%-1%和1%-3%。
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