CN104383878A - 整体式微量碳氢化合物常温净化材料及其制备方法 - Google Patents

整体式微量碳氢化合物常温净化材料及其制备方法 Download PDF

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CN104383878A
CN104383878A CN201410662563.7A CN201410662563A CN104383878A CN 104383878 A CN104383878 A CN 104383878A CN 201410662563 A CN201410662563 A CN 201410662563A CN 104383878 A CN104383878 A CN 104383878A
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何丹农
赵昆峰
高振源
蔡婷
杨玲
袁静
爨谦
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Abstract

本发明涉及一种整体式微量碳氢化合物常温净化材料及其制备方法。将体积为125毫升，5cm*5cm*5cm的100目整体式蜂窝活性炭浸渍于四氧化三钴浆料中，20-30秒后取出，50℃干燥20分钟，得四氧化三钴改性的碳氢化合物净化材料；进行多次浸渍、干燥过程，制备不同四氧化三钴担载量的整体式微量碳氢化合物常温净化材料。该净化材料以整体式蜂窝活性炭为载体，通过四氧化三钴（Co3O4）对其进行表面改性所得。本发明所得的整体式微量碳氢化合物常温净化材料，不仅具有较高碳氢化合物（HC）的净化效率，同时其净化稳定性也得到了提高。该方法经济廉价，方法简单，在半封闭空间微量HC净化中具有很好的应用前景。

Description

整体式微量碳氢化合物常温净化材料及其制备方法
技术领域
本发明涉及环境净化领域的净化材料及其制备方法，尤其是涉及整体式微量碳氢化合物常温净化材料及其制备方法。
背景技术
大部分碳氢化合物（HC）为有毒物质，同时HC是产生光化学烟雾的重要成分，能够与NOx发生光化学反应，导致光化学烟雾。光化学烟雾对人类健康和生态环境造成严重的影响，它能刺激眼结膜，引起流泪并导致红眼症，同时对鼻、咽、喉、器官积肥不均有刺激作用，能引起急性喘息症；光化学烟雾还具有损害植物、降低大气能见度、损坏橡胶制品等危害。因此，HC的治理问题亟待解决。
HC催化燃烧产物为二氧化碳和水，是一种理想的解决HC污染的方法。但是HC，尤其是低链HC，结构非常稳定，催化燃烧反应温度很高。因此，利用催化燃烧的方法治理半封闭空间（隧道、车库）中的微量HC难以实现。而这些半封闭空间，由于机动车的怠速或冷启动等，是HC聚集最多的地方，如不进行治理将会对驾驶员或工作人员的身体健康造成危害。
有文献分别公开了以竹炭、活性炭和SBA-15为载体，经表面改性制备的吸附剂用于HC的吸附净化。这些吸附剂制备方法比较复杂，且虽然具有较好的初始净化效率，但吸附稳定性较差。
发明内容
为克服现有技术的不足，本发明提供一种整体式微量碳氢化合物常温净化材料及其制备方法。
一种整体式微量碳氢化合物常温净化材料的制备方法，其特征在于，将体积为125毫升，5cm*5cm*5cm的100目整体式蜂窝活性炭浸渍于四氧化三钴浆料中，20-30秒后取出，50℃干燥20分钟，得四氧化三钴改性的碳氢化合物净化材料；进行多次浸渍、干燥过程，制备不同四氧化三钴担载量的整体式微量碳氢化合物常温净化材料。
所述四氧化三钴浆料的制备方法为，将四氧化三钴在球磨机中球磨6小时后，利用乙醇分散制浆，四氧化三钴与乙醇的比例为1克四氧化三钴:7毫升乙醇。
一种整体式微量碳氢化合物常温净化材料，其特征在于，根据上述任一所述方法制备得到；该净化材料是以整体式蜂窝活性炭为载体，经纳米四氧化三钴表面改性制得，四氧化三钴与整体式蜂窝活性炭的质量比为2:98～25:75。
其中，Co3O4的制备方法为，称取2.12g的Na2CO3溶解于20mL去离子水中，配制1mol/L Na2CO3溶液；称取5.82g的Co(NO3)2·6H2O溶于20mL去离子水中，配制1mol/L钴溶液；将钴溶液逐滴滴入碱溶液中，50℃水浴中反应1h，去离子水洗涤至中性，100℃干燥，300℃焙烧3h，得Co3O4。
本发明利用四氧化三钴（Co3O4）对整体式蜂窝活性炭进行修饰，以提高其对碳氢化合物（HC）的净化效率和稳定性；并以柴油机尾气模拟半封闭空间机动车尾气污染物，对其进行了微量HC净化性能研究。
本发明所得的整体式微量碳氢化合物常温净化材料，不仅具有较高碳氢化合物（HC）的净化效率，同时其净化稳定性也得到了提高。该方法经济廉价，方法简单，在半封闭空间微量HC净化中具有很好的应用前景。
具体实施方式
实施例1：
首先，称取60g Co3O4于球磨机中球磨6h，分散于420mL无水乙醇中制备成Co3O4浆料；然后，将体积为125mL（5cm*5cm*5cm）的100目整体式蜂窝活性炭浸渍于Co3O4浆料中，20-30s后取出，50℃干燥20min，得Co3O4改性的碳氢化合物净化材料。控制浸渍、干燥的次数为2、4、6、7次，分别得到Co3O4质量分数为5.1%、9.9%、17.7%和20.7%的整体式微量碳氢化合物常温净化材料，分别记作5.1Co3O4/AC、9.9Co3O4/AC、17.7Co3O4/AC和20.7Co3O4/AC。
对比例：
体积为125mL（5cm*5cm*5cm）的100目整体式蜂窝活性炭，记作AC。
应用例：
利用柴油机尾气模拟半封闭空间中机动车排放污染物中HC，调节风速0.14m/s，对应反应空速为10000h-1，HC浓度为45-70ppmc。柴油机尾气首先经过静电除尘将颗粒污染物去除95%以上，然后利用整体式微量碳氢化合物常温净化材料进行净化性能测试，结果见表1。
表1 整体式微量碳氢化合物常温净化材料性能测试结果
表1说明，利用少量Co3O4对整体式蜂窝活性炭进行表面改性，能够提高其HC净化效率与净化稳定性，进行大量Co3O4表面改性对整体式蜂窝活性炭的HC净化不利。
尽管说明书中已对整体式微量碳氢化合物常温净化材料及其制备方法进行了详尽、具体的描述，但显然本领域研究人员在阅读了前面说明书的描述后，仍会推断出其它显而易见的变化和内容。因此，本发明不限于文中具体的实施方案，凡与本发明精神和范围不相违背的内容也应包含在本申请内。

Claims (3)

1.一种整体式微量碳氢化合物常温净化材料的制备方法，其特征在于，将体积为125毫升，5cm*5cm*5cm的100目整体式蜂窝活性炭浸渍于四氧化三钴浆料中，20-30秒后取出，50℃干燥20分钟，得四氧化三钴改性的碳氢化合物净化材料；进行多次浸渍、干燥过程，制备不同四氧化三钴担载量的整体式微量碳氢化合物常温净化材料。
2.根据权利要求1所述整体式微量碳氢化合物常温净化材料的制备方法，其特征在于，所述四氧化三钴浆料的制备方法为，将四氧化三钴在球磨机中球磨6小时后，利用乙醇分散制浆，四氧化三钴与乙醇的比例为1克四氧化三钴:7毫升乙醇。
3.一种整体式微量碳氢化合物常温净化材料，其特征在于，根据上述任一权利要求所述方法制备得到；该净化材料是以整体式蜂窝活性炭为载体，经纳米四氧化三钴表面改性制得，四氧化三钴与整体式蜂窝活性炭的质量比为2:98～25:75。
CN201410662563.7A 2014-11-19 2014-11-19 整体式微量碳氢化合物常温净化材料及其制备方法 Expired - Fee Related CN104383878B (zh)

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Cited By (1)

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