CN107096559B - 多功能微孔陶瓷催化剂及其在空气净化方面的应用 - Google Patents
多功能微孔陶瓷催化剂及其在空气净化方面的应用 Download PDFInfo
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Abstract
本发明属于空气净化剂加工技术领域,具体公开了多功能微孔陶瓷催化剂及其在空气净化方面的应用。该催化剂包括以下重量份数的原料:粒径40~150um的硅藻土8~10份、粒径50~200um的莫来石粉14~18份、粒径30~100um的硅灰石粉10~15份、粒径100~180um的麦饭石粉9~15份、粒径10~50um的硼化物8~20份、二氧化钛纳米管3~6份、粒径20~60um的氮化铝3~5份、粒径80~250um的竹炭粉7~13份、水溶性壳聚糖2~4份、碳酸氢钠2~3份和适量水。本发明配方科学合理,各成分相互作用,使得产品具有净化空气、除菌、抑菌、产生负离子多种功能,在空气净化方面应用效果良好。
Description
技术领域
本发明属于空气净化剂加工技术领域,具体涉及一种多功能微孔陶瓷催化剂及其在空气净化方面的应用。
背景技术
微孔陶瓷是指在陶瓷内部或表面含有大量开口或闭口微小气孔的陶瓷体,其孔径一般为微米级或亚微米级,常被用来作为空气净化过滤的主要材料。然而传统微孔陶瓷材料有着较大的局限性:1、功能单一,单纯具有除菌、抑菌功能,或者仅单独具有催化除甲醛功能;2、孔隙率低,体积密度小,导致对空气的过滤能力不强,不能有效的实现对较小的颗粒(如PM2.5)完全过滤;3、无法产生负离子或负离子浓度过低。因此,开发一种多功能微孔陶瓷催化剂很有必要。
发明内容
本发明所要解决的第一个技术问题是提供一种多功能微孔陶瓷催化剂,该微孔陶瓷催化剂具有除甲醛、除菌、抑菌,产生负离子多种功能。
本发明采用的技术方案是:所述多功能微孔陶瓷催化剂包括以下重量份数的原料:粒径40~150um的硅藻土8~10份、粒径50~200um的莫来石粉14~18份、粒径30~100um的硅灰石粉10~15份、粒径100~180um的麦饭石粉9~15份、粒径10~50um的硼化物8~20份、二氧化钛纳米管3~6份、粒径20~60um的氮化铝3~5份、粒径80~250um的竹炭粉7~13份、水溶性壳聚糖2~4份、碳酸氢钠2~3份和适量水;
所述多功能微孔陶瓷催化剂由以下步骤制备得到:(1)将上述硅藻土、莫来石粉、硅灰石粉、麦饭石粉、硼化物、氮化铝、竹炭粉和碳酸氢钠按照重量配比放入球磨机中,混合球磨2~4h,按照固液比为1︰0.5~0.7向其中加水,继续球磨3~5h,得到原始浆料;
(2)取二氧化钛纳米管超声分散于水中,配制成2~6wt%的二氧化钛纳米管水分散液,然后在剧烈搅拌条件下缓慢加入水溶性壳聚糖,搅拌均匀,得到分散液;
(3)搅拌条件下将上述原始浆料和分散液混合均匀,真空去泡2~3h,将去泡后的浆料注入模具中,蒸发水分,自动晾干脱模,陈化3~5h,得到生坯;
(4)于真空条件下对生坯进行烧结,先升温至270~330℃下焙烧7~9h,然后升温至550~580℃焙烧3~4h;后通入氧气,升温至800~820℃焙烧2~3h;
(5)焙烧完成后得到成型的微孔陶瓷催化剂,冷却,放入清水中超声处理0.5~1.5h。
优选的,上述多功能微孔陶瓷催化剂,包括以下重量份数的原料:粒径80um的硅藻土9份、粒径60um的莫来石粉16份、粒径50um的硅灰石粉12份、粒径120um的麦饭石粉11份、粒径20um的硼化物15份、二氧化钛纳米管5份、粒径20um的氮化铝4份、粒径150um的竹炭粉10份、水溶性壳聚糖3份、碳酸氢钠3份和适量水。
其中,上述多功能微孔陶瓷催化剂中,所述二氧化钛纳米管的内径控制在50~150nm,纳米管长度控制在300~500nm。
其中,上述多功能微孔陶瓷催化剂,所述步骤(2)中超声分散的时间为0.5~1.0h。
其中,上述多功能微孔陶瓷催化剂,所述步骤(2)中剧烈搅拌的转速为1000~1200rpm,搅拌时间0.6~1.0h。
其中,上述多功能微孔陶瓷催化剂,所述步骤(3)中搅拌的转速为500~600rpm,搅拌时间0.8~1.5h。
其中,上述多功能微孔陶瓷催化剂,所述步骤(3)中焙烧时的升温速率为5℃/s。
其中,上述多功能微孔陶瓷催化剂中,所述硼化物为二硼化锆、 二硼化钛或者六硼化镧。
本发明所要解决的第二个技术问题是提供上述多功能微孔陶瓷催化剂在空气净化方面的应用。
于现有技术相比,本发明的有益效果是:本发明配方中添加二氧化钛纳米管,其独特的催化性能和阵列结构,显著提升了本发明对空气中甲醛的净化效率;本发明配方中添加水溶性壳聚糖,起到良好的抑菌、杀菌作用。本产品平均孔径0.3~10um,孔隙率高达到60~68%,配方科学合理,各成分相互作用,使得产品具有净化空气、除菌、抑菌、产生负离子多种功能,可用作空气净化器等环保领域。
具体实施方式
本发明提供的多功能微孔陶瓷催化剂包括以下重量份数的原料:粒径40~150um的硅藻土8~10份、粒径50~200um的莫来石粉14~18份、粒径30~100um的硅灰石粉10~15份、粒径100~180um的麦饭石粉9~15份、粒径10~50um的硼化物8~20份、二氧化钛纳米管3~6份、粒径20~60um的氮化铝3~5份、粒径80~250um的竹炭粉7~13份、水溶性壳聚糖2~4份、碳酸氢钠2~3份和适量水;
所述多功能微孔陶瓷催化剂由以下步骤制备得到:(1)将上述硅藻土、莫来石粉、硅灰石粉、麦饭石粉、硼化物、氮化铝、竹炭粉和碳酸氢钠按照重量配比放入球磨机中,混合球磨2~4h,按照固液比为1︰0.5~0.7向其中加水,继续球磨3~5h,得到原始浆料;
(2)取二氧化钛纳米管超声分散于水中,配制成2~6wt%的二氧化钛纳米管水分散液,然后在剧烈搅拌条件下缓慢加入水溶性壳聚糖,搅拌均匀,得到分散液;
(3)搅拌条件下将上述原始浆料和分散液混合均匀,真空去泡2~3h,将去泡后的浆料注入模具中,蒸发水分,自动晾干脱模,陈化3~5h,得到生坯;
(4)于真空条件下对生坯进行烧结,以5℃/s的升温速率,先升温至270~330℃下焙烧7~9h,然后升温至550~580℃焙烧3~4h;后通入氧气,升温至800~820℃焙烧2~3h;
(5)焙烧完成后得到成型的微孔陶瓷催化剂,冷却,放入清水中超声处理0.5~1.5h。
优选的,上述多功能微孔陶瓷催化剂,包括以下重量份数的原料:粒径80um的硅藻土9份、粒径60um的莫来石粉16份、粒径50um的硅灰石粉12份、粒径120um的麦饭石粉11份、粒径20um的硼化物15份、二氧化钛纳米管5份、粒径20um的氮化铝4份、粒径150um的竹炭粉10份、水溶性壳聚糖3份、碳酸氢钠3份和适量水。
其中,上述多功能微孔陶瓷催化剂中,所述二氧化钛纳米管的内径控制在50~150nm,纳米管长度控制在300~500nm。
其中,上述多功能微孔陶瓷催化剂,所述步骤(2)中超声分散的时间为0.5~1.0h;剧烈搅拌的转速为1000~1200rpm,搅拌时间0.6~1.0h。
其中,上述多功能微孔陶瓷催化剂,所述步骤(3)中搅拌的转速为500~600rpm,搅拌时间0.8~1.5h。
其中,上述多功能微孔陶瓷催化剂中,所述硼化物为二硼化锆、 二硼化钛或者六硼化镧。
进一步的,本发明还提供了上述多功能微孔陶瓷催化剂在空气净化方面的应用。
上述多功能微孔陶瓷催化剂的配方中,硅藻土和竹炭粉孔隙发达,吸附性能好;二氧化钛纳米管,其独特的光催化性能和阵列结构,一方面显著提升了本产品对空气中甲醛的净化效率,另一方面提升了产品的机械性能;水溶性壳聚糖,起到良好的抑菌、杀菌作用;氮化铝的添加,能够大幅降低产品的烧结温度,有利于节约能源;碳酸氢钠起到造孔剂的作用。本产品平均孔径0.3~10um,孔隙率达到55~68%,配方科学合理,各成分相互作用,使得产品具有净化空气(甲醛去除氯达90%以上)、除菌(白色葡萄球菌的去除率高达99.97%)、抑菌、产生负离子多种功能,可用作空气净化器等环保领域。
以下结合具体的实施例对本发明作进一步的解释和说明,但并不因此限制本发明的保护范围。
实施例1
多功能微孔陶瓷催化剂,包括以下重量份数(公斤)的原料:粒径80um的硅藻土9份、粒径60um的莫来石粉16份、粒径50um的硅灰石粉12份、粒径120um的麦饭石粉11份、粒径20um的二硼化锆15份、二氧化钛纳米管(内径60nm,长度500nm)5份、粒径20um的氮化铝4份、粒径150um的竹炭粉10份、水溶性壳聚糖3份、碳酸氢钠3份和适量水。
多功能微孔陶瓷催化剂由以下步骤制备得到:(1)将上述硅藻土、莫来石粉、硅灰石粉、麦饭石粉、二硼化锆、氮化铝、竹炭粉和碳酸氢钠按照重量配比放入球磨机中,混合球磨3h,按照固液比为1︰0.6向其中加水,继续球磨5h,得到原始浆料;
(2)取二氧化钛纳米管超声分散于水中,超声分散的时间为0.8h,配制成3.5wt%的二氧化钛纳米管水分散液,然后在1200rpm剧烈搅拌条件下缓慢加入水溶性壳聚糖,控制水溶性壳聚糖的加入速度,20min加完,然后继续搅拌0.8h混合均匀,得到分散液;
(3)于600rpm搅拌条件下将上述原始浆料和分散液混合,搅拌1.2h,真空去泡3h,将去泡后的浆料注入模具中,蒸发水分,自动晾干脱模,陈化4h,得到生坯;
(4)于真空条件下对生坯进行烧结,以5℃/s的升温速率,先升温至300℃下焙烧7h,然后升温至560℃焙烧3.5h;后通入氧气,升温至820℃焙烧2.5h;
(5)焙烧完成后得到成型的微孔陶瓷催化剂,冷却,放入清水中超声处理1.0h。
实施例2
多功能微孔陶瓷催化剂,包括以下重量份数(公斤)的原料:粒径120um的硅藻土10份、粒径100um的莫来石粉14份、粒径80um的硅灰石粉14份、粒径150um的麦饭石粉11份、粒径30um的二硼化钛13份、二氧化钛纳米管(内径50nm,长度460nm)6份、粒径35um的氮化铝5份、粒径130um的竹炭粉9份、水溶性壳聚糖2份、碳酸氢钠3份和适量水。
多功能微孔陶瓷催化剂由以下步骤制备得到:(1)将上述硅藻土、莫来石粉、硅灰石粉、麦饭石粉、二硼化钛、氮化铝、竹炭粉和碳酸氢钠按照重量配比放入球磨机中,混合球磨4h,按照固液比为1︰0.55向其中加水,继续球磨5h,得到原始浆料;
(2)取二氧化钛纳米管超声分散于水中,超声分散的时间为1.0h,配制成4.0wt%的二氧化钛纳米管水分散液,然后在1200rpm剧烈搅拌条件下缓慢加入水溶性壳聚糖,控制水溶性壳聚糖的加入速度,25min加完,然后继续搅拌0.6h混合均匀,得到分散液;
(3)于560rpm搅拌条件下将上述原始浆料和分散液混合,搅拌1.5h,真空去泡2.6h,将去泡后的浆料注入模具中,蒸发水分,自动晾干脱模,陈化4h,得到生坯;
(4)于真空条件下对生坯进行烧结,以5℃/s的升温速率,先升温至305℃下焙烧8h,然后升温至560℃焙烧3.5h;后通入氧气,升温至820℃焙烧2.0h;
(5)焙烧完成后得到成型的微孔陶瓷催化剂,冷却,放入清水中超声处理1.0h。
将上述实施例1和实施例2的产品应用于空气净化器中,由广州工业微生物检测中心对实施例1和实施例2产品在空气净化方面进行检测(检测编号KJ20170033),检测结果:(1)甲醛去除率平均为90%;(2)白色葡萄球菌的平均去除率为99.96%;(3)距产品5cm处负离子浓度为1.85×107。
以上所述为本发明的优选实施例,应当指出,对于本领域的技术人员来说,在不脱离本发明结构的前提下,还可以做出若干变形和改进,这些也应当视为本发明的保护范围,这些都不会影响本发明实施的效果和本专利的实用性。
Claims (6)
1.多功能微孔陶瓷催化剂,其特征在于,该催化剂由以下重量份数的原料制备而成:粒径40~150um的硅藻土8~10份、粒径50~200um的莫来石粉14~18份、粒径30~100um的硅灰石粉10~15份、粒径100~180um的麦饭石粉9~15份、二氧化钛纳米管3~6份、粒径20~60um的氮化铝3~5份、粒径10~50um的硼化物8~20份、粒径80~250um的竹炭粉7~13份、水溶性壳聚糖2~4份、碳酸氢钠2~3份和适量水;
所述二氧化钛纳米管的内径控制在50~150nm,纳米管长度控制在300~500nm;
所述硼化物为二硼化锆、二硼化钛或者六硼化镧;
所述多功能微孔陶瓷催化剂由以下步骤制备得到:(1)将上述硅藻土、莫来石粉、硅灰石粉、麦饭石粉、硼化物、氮化铝、竹炭粉和碳酸氢钠按照重量配比放入球磨机中,混合球磨2~4h,按照固液比为1︰0.5~0.7向其中加水,继续球磨3~5h,得到原始浆料;
(2)取二氧化钛纳米管超声分散于水中,配制成2~6wt%的二氧化钛纳米管水分散液,然后在剧烈搅拌条件下缓慢加入水溶性壳聚糖,搅拌均匀,得到分散液;
(3)搅拌条件下将上述原始浆料和分散液混合均匀,真空去泡2~3h,将去泡后的浆料注入模具中,蒸发水分,自动晾干脱模,陈化3~5h,得到生坯;
(4)于真空条件下对生坯进行烧结,先升温至270~330℃下焙烧7~9h,然后升温至550~580℃焙烧3~4h;后通入氧气,升温至800~820℃焙烧2~3h;
焙烧时的升温速率为5℃/s;
(5)焙烧完成后得到成型的微孔陶瓷催化剂,冷却,放入清水中超声处理0.5~1.5h。
2.根据权利要求1所述的多功能微孔陶瓷催化剂,其特征在于,该催化剂由以下重量份数的原料制备而成:粒径80um的硅藻土9份、粒径60um的莫来石粉16份、粒径50um的硅灰石粉12份、粒径120um的麦饭石粉11份、粒径20um的硼化物15份、二氧化钛纳米管5份、粒径20um的氮化铝4份、粒径150um的竹炭粉10份、水溶性壳聚糖3份、碳酸氢钠3份和适量水。
3.根据权利要求1或2所述的多功能微孔陶瓷催化剂,其特征在于,所述步骤(2)中超声分散的时间为0.5~1.0h。
4.根据权利要求1或2所述的多功能微孔陶瓷催化剂,其特征在于,所述步骤(2)中剧烈搅拌的转速为1000~1200rpm,搅拌时间0.6~1.0h。
5.根据权利要求1或2所述的多功能微孔陶瓷催化剂,其特征在于,所述步骤(3)中搅拌的转速为500~600rpm,搅拌时间0.8~1.5h。
6.权利要求1~5任一项所述多功能微孔陶瓷催化剂在空气净化方面的应用。
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