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碱性活性炭的碱性基团浓度与其D4吸附容量正相关

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碱性活性炭的碱性基团浓度与其D4吸附容量正相关

发布日期:2018-04-23 作者: 点击:

  HUOXINGTANSUANXINGHEJIANXINGDUID4XIFUDEYINGXIANGCONGD4XIFUSHIYANDEJIEGUOKAN,JINGBUTONGCHULIHOU,HUOXINGTANDED4XIFURONGLIANGHUODUOHUOSHAODIBIANHUA。DANGHUOXINGTANJINYONGHClCHULISHI,HUOXINGTANDED4XIFUNENGLIXIAJIANG,ERBENYANJIUZHONGSHIYONGDESUOYOUQITAGAIXINGFANGFADAOZHID4XIFURONGLIANGDETIGAO。YUANSHIHEDABUFENGAIXINGHUOXINGTANZAIBETBIAOMIANJIHEYOULIKONGXI(KONGXIKUANDUWEI1.7e3DEKONGXI)ZHIJIANDECHAYI。0 nm)DUID4XIFUMEIYOUXIANZHEYINGXIANG,YINCISUANXINGHEJIANXINGXINGZHIDUIGUIYANGWANXIFUQIZHONGYAOZUOYONG。XINKAIFADEHUOXINGTANZAIBUTONGDEGAIXINGCHENGXUHOUKENENGHUIJIEJINPINGGUGUIYANGWANXIFUDEBIAOMIANHUAXUEXIAOYING,ERYUBIAOMIANJIEGOUJIEGOUHEKONGJINGXIAOYINGWUGUAN。YUANSHIHUOXINGTANBIAOXIANCHUJIANXING。NH3·H2OHERECHULIDOUJINYIBUTIGAOLEJIANXINGJITUANDENONGDU。TU2MIAOHUILEJIANXINGJITUANNONGDUYUJIANXINGHUOXINGTANDED4XIFURONGLIANGZHIJIANDEXIANGGUANXING。CONGTU3KEYIKANCHU,JIANXINGHUOXINGTANDEJIANXINGJITUANNONGDUYUQID4XIFURONGLIANGZHENGXIANGGUAN。DUIYULIANGBUHCl-REGAIXINGDESUANXINGHUOXINGTAN,YEGUANCHADAOZHEIZHONGGUILVXING。YINCI,KEYIDECHUJIELUN,HUOXINGTANBIAOMIANSHANGDEJIANXINGJITUANDUIYUGUIYANGWANXIFUSHIQIWANGDE。RENMENYIZHIRENWEIHUOXINGTANDEJIANXINGTEZHENGZHUYAOGUIYINYUCHOUHEDUOFANGXIANGPIANSHANGDELIYUpDIANZI。ZAIN2QIFENXIADERECHULIKEYIQUCHUYIXIESUANXINGJITUANHEHANYANGGUANNENGTUAN,ZHEIXIEGUANNENGTUANTONGGUOXIYINJUHEFANGXIANGZUPIANSHANGDEpDIANZIBINGSHIQIDINGWEI,CONGERJIANGDIHUOXINGTANDEJIANDU。YINCI,TONGGUORECHULIQUCHUYANGQISHIDEHUOXINGTANBIAOMIANBUJINGENGJIAJIANXING,ERQIEHAIJUYOUGENGXIAODEJIXING,ZHEISHICONGLFGXIFUGUIYANGWANSUOXUDE。CHULELIYUDEpDIANZIZHIWAI,YIBUFENJIANXINGTEZHENGYUBIAOMIANSHANGDEYIXIEJIANXINGJITUANRUSEXIHEBINANTONGXINGJIEGOUXIANGGUAN。YOUYUNH3·H2OSHIYIZHONGRUOJIAN,GENJUBoehmDIDINGDEJIEGUO,GUANCHADAOZAINH3·H2OCHULIHOU,BUJINYIXIESUANXINGJITUANBEIZHONGHE,ERQIEZAIBIAOMIANSHANGXINGCHENGLEYIXIEJIANXINGJITUAN,CONGERDAOZHIYISHIDUZENGJIAJIANDU。JIEGUO,D4XIFURONGLIANGDEDAOGAISHAN。SUANXINGJITUANDUID4XIFUNENGLIDEYINGXIANGHClCHULIHUOXINGTANDAOZHID4XIFUNENGLIJIANGDI。KEYIRENWEID4XIFUNENGLIDEJIANGDIKENENGGUIYINYUSUOJIDENONGDUGUOGAO。HUANJUHUASHUO,HUOXINGTANBIAOMIANSHANGDESUOJIDUIYUGUIYANGWANXIFUSHIBUHEXUYAODE。ZHIYUNEIZHIJITUAN,TAMENDUIGUIYANGWANXIFUDEYINGXIANGBUNENGJINYOUBENYANJIUZHONGHUODEDESHUJUQUEDING。RANER,ZAIZHEIXIANGYANJIUZHONGYINGYONGDESUOYOUXIUGAIFANGFADOUSHIDENEIZHIJITUANDEBIANHUAQUSHIXIANGTONG。

  包括碱处理,酸处理和热处理等方法处理活性炭,随后生成具有不同表面结构和化学性质的交流电。从交流特性和硅氧烷吸附能力之间的观察关系可以得出以下结论:即活性炭表面上的窄介孔对于来自LFG的硅氧烷吸附更加期望。活性炭的碱性通常与其疏水性有关,被发现有利于硅氧烷的吸附。在活性炭表面的酸性基团中,发现羧基对硅氧烷吸附有严重不利影响,而酚类基团有利于硅氧烷吸附。内酯基团对硅氧烷吸附的影响不能仅通过本研究中获得的数据来确定。本研究中使用的大多数改性方法并未导致BET表面积和总孔隙的巨大变。但是经过两步改性后,有的活性炭含有的硅氧烷吸附量最大,因此具有最高的硅氧烷吸附容量。改性适度提高了活性炭碱度,并在一定程度上去除了不需要的羧基,从而提高了活性炭的硅氧烷吸附能力。HCl处理明显提高了羧基,内酯基和酚基等酸性基团的浓度,并降低了活性炭的碱性基团浓度。增加的羧基导致活性炭对硅氧烷的吸附能力大大降低。当HCl处理的活性炭在N2气氛下通过加热进一步改性时,增加的羧酸基团被除去,柱状活性炭厂家开心棋牌而增加的酚基团的浓度没有很大改变,并且碱性基团的浓度增加。结果,两步改良活性炭的硅氧烷吸附容量得到改善。

柱状活性炭厂家

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