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摘要(yao)(yao)：CO2吸附(fu)強(qiang)化(hua)(hua)(hua)(hua)(hua)(hua)CH4/H2O重整(zheng)制氫(qing)是提供低成(cheng)本高純氫(qing)氣和(he)實現(xian)CO2減排的(de)(de)(de)(de)(de)方(fang)法之一(yi)(yi)。其(qi)中(zhong)，催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)和(he)吸附(fu)劑(ji)(ji)(ji)是該工藝的(de)(de)(de)(de)(de)重要(yao)(yao)組(zu)成(cheng)部分(fen)(fen)(fen)(fen)，其(qi)活性與選擇性制約了反(fan)應速率和(he)產率，壽命長短(duan)關(guan)系到(dao)生(sheng)產成(cheng)本。綜述(shu)了CO2吸附(fu)強(qiang)化(hua)(hua)(hua)(hua)(hua)(hua)CH4/H2O重整(zheng)制氫(qing)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)和(he)吸附(fu)劑(ji)(ji)(ji)的(de)(de)(de)(de)(de)研(yan)究(jiu)現(xian)狀及存(cun)在(zai)的(de)(de)(de)(de)(de)問(wen)題(ti)(ti)，機械混合(he)的(de)(de)(de)(de)(de)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)與吸附(fu)劑(ji)(ji)(ji)在(zai)反(fan)應過程(cheng)中(zhong)存(cun)在(zai)吸附(fu)產物包覆催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)活性位點(dian)的(de)(de)(de)(de)(de)問(wen)題(ti)(ti)，導致催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)活性迅速下降。針對該問(wen)題(ti)(ti),進一(yi)(yi)步探討了不同結構雙功(gong)(gong)能復合(he)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)的(de)(de)(de)(de)(de)結構特性、研(yan)究(jiu)現(xian)狀及其(qi)在(zai)循(xun)(xun)環-再生(sheng)過程(cheng)中(zhong)存(cun)在(zai)的(de)(de)(de)(de)(de)問(wen)題(ti)(ti),核殼(ke)型雙功(gong)(gong)能催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)具有(you)吸附(fu)組(zu)分(fen)(fen)(fen)(fen)與催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)組(zu)分(fen)(fen)(fen)(fen)相(xiang)對獨立、催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)組(zu)分(fen)(fen)(fen)(fen)分(fen)(fen)(fen)(fen)散分(fen)(fen)(fen)(fen)布和(he)比表面積大等(deng)優(you)點(dian)，在(zai)吸附(fu)強(qiang)化(hua)(hua)(hua)(hua)(hua)(hua)制氫(qing)中(zhong)有(you)進一(yi)(yi)步研(yan)究(jiu)的(de)(de)(de)(de)(de)潛力。利用(yong)雙功(gong)(gong)能催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)的(de)(de)(de)(de)(de)結構特點(dian)，實現(xian)反(fan)復循(xun)(xun)環再生(sheng)過程(cheng)中(zhong)催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)與脫碳反(fan)應的(de)(de)(de)(de)(de)匹配，是推動CO2吸附(fu)強(qiang)化(hua)(hua)(hua)(hua)(hua)(hua)CH4/H2O重整(zheng)制氫(qing)技術(shu)工業化(hua)(hua)(hua)(hua)(hua)(hua)發展的(de)(de)(de)(de)(de)關(guan)鍵(jian)。 關(guan)鍵(jian)詞：吸附(fu)強(qiang)化(hua)(hua)(hua)(hua)(hua)(hua)CH4/H2O重整(zheng);雙功(gong)(gong)能催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)；CO2吸附(fu)劑(ji)(ji)(ji)；核殼(ke)結構；制氫(qing)

發(fa)布(bu)時(shi)間： 2021-12-25 08:38

王雪雪，朱文 摘要：氫(qing)(qing)(qing)(qing)氣是工(gong)(gong)業(ye)領(ling)域(yu)中獲(huo)取(qu)的原料，所以工(gong)(gong)業(ye)制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)手段也較為豐(feng)富。文章著眼于工(gong)(gong)業(ye)制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)領(ling)域(yu)的甲(jia)(jia)醇裂解制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)工(gong)(gong)藝(yi)，對這種制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)技術的工(gong)(gong)藝(yi)原理、生產流(liu)程(cheng)、影響因素進行分析，然(ran)后比較不同(tong)類(lei)型的甲(jia)(jia)醇制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)工(gong)(gong)藝(yi)和不同(tong)種類(lei)的工(gong)(gong)業(ye)制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)方法，論(lun)述甲(jia)(jia)醇裂解制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)工(gong)(gong)藝(yi)的應用優勢，希望為相關(guan)工(gong)(gong)作人(ren)員帶來參考。 關(guan)鍵詞：甲(jia)(jia)醇裂解制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)工(gong)(gong)藝(yi)；工(gong)(gong)業(ye)制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)；甲(jia)(jia)醇制(zhi)(zhi)(zhi)(zhi)氫(qing)(qing)(qing)(qing)；經濟性

發布時間： 2021-12-01 09:52

陳敏生，劉杰(jie)，朱濤 摘要: 闡述了(le)甲醇重(zhong)整制(zhi)(zhi)氫(qing)的(de)(de)途徑和甲醇水(shui)(shui)蒸(zheng)氣重(zhong)整(SRM)催化劑種(zhong)類，簡(jian)述了(le)車(che)載SRM制(zhi)(zhi)氫(qing)發電系統的(de)(de)工作流(liu)程及微(wei)反應(ying)(ying)器的(de)(de)重(zhong)要性; 介紹(shao)了(le)反應(ying)(ying)器的(de)(de)研究現狀，包括(kuo)膜反應(ying)(ying)器、柱(zhu)形微(wei)反應(ying)(ying)器、板(ban)(ban)形微(wei)反應(ying)(ying)器及5種(zhong)多孔微(wei)通(tong)(tong)道(dao)催化劑載體(ti)板(ban)(ban); 展(zhan)望了(le)車(che)載SRM制(zhi)(zhi)氫(qing)技(ji)術的(de)(de)發展(zhan)趨勢(shi)。結(jie)果(guo)表(biao)明，車(che)載SRM技(ji)術是氫(qing)能(neng)源汽車(che)供氫(qing)的(de)(de)趨勢(shi)，選區(qu)激光(guang)熔化(SLM)增材(cai)制(zhi)(zhi)造是實現催化劑載體(ti)微(wei)通(tong)(tong)道(dao)結(jie)構可控的(de)(de)解(jie)決方(fang)案。在滿足SLM制(zhi)(zhi)造可行性約(yue)束(shu)條件下(xia)，載體(ti)的(de)(de)多孔微(wei)通(tong)(tong)道(dao)結(jie)構參(can)數與其制(zhi)(zhi)氫(qing)性能(neng)的(de)(de)對應(ying)(ying)關系是研究的(de)(de)主要方(fang)向。 關鍵詞: 甲醇水(shui)(shui)蒸(zheng)氣重(zhong)整; 制(zhi)(zhi)氫(qing); 微(wei)反應(ying)(ying)器; 多孔結(jie)構; 催化劑載體(ti); 選區(qu)激光(guang)熔化

發(fa)布時間： 2021-11-17 14:21

摘要(yao)：采(cai)用(yong)(yong)浸漬(zi)法(fa)(fa)制(zhi)(zhi)(zhi)(zhi)備(bei)(bei)了一(yi)系列CuxZnyAlz催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)，考察(cha)了催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)焙燒溫(wen)度和組成(cheng)對甲(jia)醇水(shui)蒸氣(qi)(qi)轉(zhuan)(zhuan)化(hua)(hua)(hua)(hua)(hua)制(zhi)(zhi)(zhi)(zhi)氫(qing)反應(ying)(ying)(ying)性能的影響，用(yong)(yong)TG-DTA、XTD和SEM等方法(fa)(fa)對催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)性能進行(xing)了表征(zheng)。結果表明：400℃焙燒、Cu/Zn/Al配比（摩爾）為1:1:3.2時，制(zhi)(zhi)(zhi)(zhi)備(bei)(bei)的Cu1Zn1Al3.2催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)具有(you)良(liang)好催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)性能；Cu1Zn1Al3.2催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)較為適宜的反應(ying)(ying)(ying)工(gong)藝(yi)條件(jian)為反應(ying)(ying)(ying)溫(wen)度240~250℃，水(shui)/醇比1.1~1.3，液體質(zhi)量(liang)空速1~2h-1；甲(jia)醇轉(zhuan)(zhuan)化(hua)(hua)(hua)(hua)(hua)率(lv)達到100%，二(er)氧化(hua)(hua)(hua)(hua)(hua)碳(tan)選(xuan)擇性大(da)于(yu)97%。本研究制(zhi)(zhi)(zhi)(zhi)備(bei)(bei)的Cu1Zn1Al3.2催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)中CuO含量(liang)僅為24.53%（質(zhi)量(liang)），約為通常共沉淀法(fa)(fa)制(zhi)(zhi)(zhi)(zhi)備(bei)(bei)的Cu/Zn/Al催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)的CuO含量(liang)的50%，但(dan)Cu1Zn1Al3.2催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)對甲(jia)醇水(shui)蒸氣(qi)(qi)轉(zhuan)(zhuan)化(hua)(hua)(hua)(hua)(hua)制(zhi)(zhi)(zhi)(zhi)氫(qing)反應(ying)(ying)(ying)性能與共沉淀法(fa)(fa)相當。為甲(jia)醇水(shui)蒸氣(qi)(qi)轉(zhuan)(zhuan)化(hua)(hua)(hua)(hua)(hua)制(zhi)(zhi)(zhi)(zhi)氫(qing)技術用(yong)(yong)于(yu)燃料(liao)電池用(yong)(yong)氫(qing)和中小規(gui)模制(zhi)(zhi)(zhi)(zhi)氫(qing)過程(cheng)提供依據。 關鍵詞：甲(jia)醇；水(shui)蒸汽轉(zhuan)(zhuan)化(hua)(hua)(hua)(hua)(hua)；氫(qing)氣(qi)(qi)；浸漬(zi)法(fa)(fa)；Cu/Zn/Al催(cui)(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)

發布(bu)時間： 2021-11-01 15:47

劉思樂(le)* ，劉鑫禹，閻柏陸 （沈陽(yang)科技(ji)學(xue)院，遼寧 沈陽(yang) 110167） 摘 要: 采(cai)用等體積分步浸漬法(fa)以Cu為(wei)(wei)活性(xing)組分，ZnO為(wei)(wei)助(zhu)劑(ji)，Al2O3為(wei)(wei)載(zai)體，制備 Cu-ZnO/γ-Al2O3 催化劑(ji)，并(bing)將 Cu-ZnO/γ-Al2O3催化劑(ji)與工(gong)(gong)業催化劑(ji)B205 聯(lian)合應(ying)(ying)用于甲醇(chun)水蒸(zheng)氣重(zhong)(zhong)整(zheng)制氫(qing)(qing)工(gong)(gong)藝，考(kao)察反應(ying)(ying)床(chuang)(chuang)層溫(wen)度(du)、液空速和水醇(chun)比對氫(qing)(qing)產(chan)率(lv)的(de)影(ying)響，并(bing)利用XＲD及TPＲ對催化劑(ji)的(de)結構(gou)、還原溫(wen)度(du)進行表(biao)征(zheng)。結果表(biao)明，聯(lian)合使用 Cu-ZnO/γ-Al2O3與B205制氫(qing)(qing)催化劑(ji)對甲醇(chun)水蒸(zheng)氣重(zhong)(zhong)整(zheng)制氫(qing)(qing)表(biao)現出較好的(de)穩定性(xing)，在(zai)反應(ying)(ying)床(chuang)(chuang)層溫(wen)度(du) 245 ℃、液空速 0. 36 h-1和水醇(chun)物質的(de)量比4. 0條件下，氫(qing)(qing)產(chan)率(lv)為(wei)(wei)2. 521 6 mol·mol-1。 關鍵詞: 能源化學(xue); 甲醇(chun); 重(zhong)(zhong)整(zheng); 催化劑(ji); 制氫(qing)(qing)

發布時間： 2021-10-21 14:42

摘 要：以堿式(shi)碳(tan)(tan)酸(suan)銅(tong)、碳(tan)(tan)酸(suan)鎂、碳(tan)(tan)酸(suan)鈰、碳(tan)(tan)酸(suan)錳、碳(tan)(tan)酸(suan)銨和(he)水(shui)泥-75為原料，以氨水(shui)為溶劑(ji)(ji)，采用新型濕(shi)(shi)(shi)(shi)法(fa)(fa)(fa)和(he)共(gong)沉淀法(fa)(fa)(fa)制(zhi)備(bei)了銅(tong)鋅(xin)鋁催(cui)化(hua)(hua)(hua)(hua)劑(ji)(ji)。將相(xiang)同(tong)組(zu)分(fen)的濕(shi)(shi)(shi)(shi)法(fa)(fa)(fa)催(cui)化(hua)(hua)(hua)(hua)劑(ji)(ji)和(he)共(gong)沉淀法(fa)(fa)(fa)的催(cui)化(hua)(hua)(hua)(hua)劑(ji)(ji)在(zai)同(tong)一(yi)條件下進行對比，在(zai)氣-固相(xiang)固定床催(cui)化(hua)(hua)(hua)(hua)反應裝置上(shang)評(ping)價催(cui)化(hua)(hua)(hua)(hua)劑(ji)(ji)的甲醇(chun)裂解(jie)性能。兩種(zhong)制(zhi)備(bei)工藝中，共(gong)沉淀法(fa)(fa)(fa)較(jiao)濕(shi)(shi)(shi)(shi)法(fa)(fa)(fa)簡單。分(fen)析(xi)實驗數(shu)(shu)據發(fa)現，成分(fen)相(xiang)同(tong)時，濕(shi)(shi)(shi)(shi)法(fa)(fa)(fa)催(cui)化(hua)(hua)(hua)(hua)劑(ji)(ji)的活性和(he)選擇性更好，甲醇(chun)的轉化(hua)(hua)(hua)(hua)率可達(da)97%，H2+CO的選擇性達(da)77%。實驗數(shu)(shu)據表明，反應溫度在(zai)180~280℃之間時，濕(shi)(shi)(shi)(shi)法(fa)(fa)(fa)催(cui)化(hua)(hua)(hua)(hua)劑(ji)(ji)的性能明顯優于(yu)(yu)共(gong)沉淀法(fa)(fa)(fa)的催(cui)化(hua)(hua)(hua)(hua)劑(ji)(ji)，濕(shi)(shi)(shi)(shi)法(fa)(fa)(fa)更適合(he)于(yu)(yu)制(zhi)備(bei)低溫甲醇(chun)重整制(zhi)氫催(cui)化(hua)(hua)(hua)(hua)劑(ji)(ji)。 關鍵詞： 新型濕(shi)(shi)(shi)(shi)法(fa)(fa)(fa)；銅(tong)鋅(xin)鋁催(cui)化(hua)(hua)(hua)(hua)劑(ji)(ji)；甲醇(chun)催(cui)化(hua)(hua)(hua)(hua)裂解(jie)；對比

發布時間： 2021-10-06 15:05

劉(liu)斌(bin)1 ，張莉1 ，楊陶陶2 ，張琪2 ，王強1 ( 華東理(li)工大(da)學 1． 機械學院; 2． 化(hua)(hua)(hua)(hua)(hua)工學院，上海 200237) ?摘要: 氫(qing)(qing)(qing)燃料(liao)電池被認為(wei)(wei)是未來最有(you)前景(jing)的(de)(de)(de)(de)(de)能(neng)源技術(shu)(shu)之一，通過(guo)液體甲醇現場重整制(zhi)氫(qing)(qing)(qing)可(ke)有(you)效解決氫(qing)(qing)(qing)氣儲存和運輸等技術(shu)(shu)瓶頸。文中設計(ji)加工了板(ban)式(shi)微反(fan)應器(qi)(qi)并(bing)搭建(jian)了配套(tao)的(de)(de)(de)(de)(de)制(zhi)氫(qing)(qing)(qing)系(xi)統(tong)，制(zhi)備了具有(you)自還原特性的(de)(de)(de)(de)(de)新型網狀 CuNi (Fe) / γ-Al2 O3 /Al 結(jie)(jie)構化(hua)(hua)(hua)(hua)(hua)催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)。以甲醇為(wei)(wei)原料(liao)，實驗(yan)研究了自制(zhi)催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)在微反(fan)應器(qi)(qi)與(yu)管(guan)式(shi)固定床反(fan)應器(qi)(qi)中的(de)(de)(de)(de)(de)催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)性能(neng)，并(bing)與(yu)商(shang)用(yong)(yong)(yong)(yong) CuZn 催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)進行(xing)了性能(neng)對比(bi)。結(jie)(jie)果表明: 與(yu)管(guan)式(shi)反(fan)應器(qi)(qi)相比(bi)，微反(fan)應器(qi)(qi)能(neng)更好地發揮催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)的(de)(de)(de)(de)(de)低(di)溫(wen)活性。開發的(de)(de)(de)(de)(de) CuNiFe 結(jie)(jie)構化(hua)(hua)(hua)(hua)(hua)催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)在 10 000 mL / ( g·h) 空速(su)下仍能(neng)保持(chi) 82． 3% 的(de)(de)(de)(de)(de)甲醇轉化(hua)(hua)(hua)(hua)(hua)率(lv)，單位質量催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)的(de)(de)(de)(de)(de)產氫(qing)(qing)(qing)量可(ke)達商(shang)用(yong)(yong)(yong)(yong)催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)的(de)(de)(de)(de)(de) 2． 62 倍。使用(yong)(yong)(yong)(yong)自制(zhi)催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)，制(zhi)氫(qing)(qing)(qing)系(xi)統(tong)冷態啟(qi)動 40 min 可(ke)達到甲醇轉化(hua)(hua)(hua)(hua)(hua)率(lv) 100% 的(de)(de)(de)(de)(de)穩定產氫(qing)(qing)(qing)，顯著低(di)于使用(yong)(yong)(yong)(yong)商(shang)用(yong)(yong)(yong)(yong)催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji)結(jie)(jie)果。 關鍵詞(ci): 甲醇; 板(ban)式(shi)微反(fan)應器(qi)(qi);結(jie)(jie)構化(hua)(hua)(hua)(hua)(hua)催(cui)(cui)化(hua)(hua)(hua)(hua)(hua)劑(ji)(ji)(ji);重整制(zhi)氫(qing)(qing)(qing)。 中圖分類號: TQ 116． 2 文獻標識碼: A 文章編號: 1005-9954( 2020) 05-0069-06 DOI: 10． 3969 /j． issn． 1005-9954． 2020． 05． 014

發布時(shi)間(jian)： 2021-07-15 14:50

甲(jia)(jia)(jia)(jia)醇重(zhong)(zhong)整制(zhi)氫(qing)(qing)工藝具有重(zhong)(zhong)整溫度(du)低、能耗(hao)低、貯存安全(quan)等優(you)點(dian)，應用(yong)前(qian)景廣泛。概述了(le)甲(jia)(jia)(jia)(jia)醇重(zhong)(zhong)整制(zhi)氫(qing)(qing)的基本(ben)原理(li)，綜述了(le)甲(jia)(jia)(jia)(jia)醇水蒸汽重(zhong)(zhong)整、甲(jia)(jia)(jia)(jia)醇裂解和(he)甲(jia)(jia)(jia)(jia)醇氧化重(zhong)(zhong)整制(zhi)氫(qing)(qing)的方法及(ji)其工藝流程(cheng)，簡要探討(tao)了(le)２種(zhong)新穎的制(zhi)氫(qing)(qing)方法。并 指出了(le)甲(jia)(jia)(jia)(jia)醇制(zhi)氫(qing)(qing)技術(shu)在未來(lai)的研究方向。

發布(bu)時(shi)間(jian)： 2021-01-29 09:54

采用(yong)固相(xiang)球磨法(fa)制(zhi)備了(le)(le) Al 含(han)量(liang)不等的(de) Cu-Ni-Al 三元尖(jian)(jian)晶石(shi)(shi)(shi)固溶(rong)體催(cui)化(hua)(hua)劑(ji)(ji)，通過 BET、XＲD、H2 -TPＲ、XPS 表(biao)征和(he)(he)(he)催(cui)化(hua)(hua)性(xing)(xing)(xing)(xing)能評價，研究了(le)(le) Al 含(han)量(liang)對 Cu-Ni-Al 尖(jian)(jian)晶石(shi)(shi)(shi)的(de)物化(hua)(hua)性(xing)(xing)(xing)(xing)質(zhi)和(he)(he)(he)甲(jia)醇制(zhi)氫(qing)緩釋催(cui)化(hua)(hua)性(xing)(xing)(xing)(xing)能的(de)影響(xiang)。結果(guo)表(biao)明(ming)，恒定 Cu ∶ Ni ( molar ratio) = 0. 95 ∶0. 05，增加 Al 含(han)量(liang)時(shi)( Al = 2、3、4) ，所得(de)催(cui)化(hua)(hua)劑(ji)(ji)的(de)比表(biao)面積和(he)(he)(he)孔體積都明(ming)顯增大(da)，且尖(jian)(jian)晶石(shi)(shi)(shi)晶胞常(chang)數和(he)(he)(he)晶粒尺寸均減小，催(cui)化(hua)(hua)劑(ji)(ji)也變(bian)得(de)難以(yi)還原。進(jin)(jin)一步(bu)研究發現，隨(sui)著(zhu) Al 含(han)量(liang)增加，尖(jian)(jian)晶石(shi)(shi)(shi) Ni2+ 含(han)量(liang)略微增加，但尖(jian)(jian)晶石(shi)(shi)(shi) Cu2+ 含(han)量(liang)大(da)幅降(jiang)低，因此，尖(jian)(jian)晶石(shi)(shi)(shi)結構(gou)中 Cu2+ 和(he)(he)(he) Ni2+ 的(de)總量(liang)降(jiang)低，表(biao)明(ming) Ni2+ 的(de)存在抑制(zhi)了(le)(le) Cu2+ 進(jin)(jin)入尖(jian)(jian)晶石(shi)(shi)(shi)結構(gou)。表(biao)面分析結果(guo)證(zheng)實，Al 含(han)量(liang)增加導致催(cui)化(hua)(hua)劑(ji)(ji)表(biao)面由(you)富 Cu 轉變(bian)為富 Al，表(biao)層(ceng)尖(jian)(jian)晶石(shi)(shi)(shi) Cu2+ 含(han)量(liang)降(jiang)低，但仍高于體相(xiang)含(han)量(liang)。評價結果(guo)顯示，隨(sui)著(zhu) Al 含(han)量(liang)增加，反應初(chu)始活性(xing)(xing)(xing)(xing)增大(da)，CO 選(xuan)擇性(xing)(xing)(xing)(xing)降(jiang)低，但 Al 過量(liang)太多時(shi)催(cui)化(hua)(hua)穩定性(xing)(xing)(xing)(xing)降(jiang)低，綜(zong)合(he)來說，Al = 3 的(de)催(cui)化(hua)(hua)劑(ji)(ji)表(biao)現出較好的(de)催(cui)化(hua)(hua)性(xing)(xing)(xing)(xing)能。結果(guo)表(biao)明(ming)，對于 Cu-Ni-Al 尖(jian)(jian)晶石(shi)(shi)(shi)緩釋催(cui)化(hua)(hua)劑(ji)(ji)，存在最(zui)佳 Al 含(han)量(liang)，對催(cui)化(hua)(hua)穩定性(xing)(xing)(xing)(xing)起到關鍵作(zuo)用(yong)。

發布時間： 2021-01-27 10:16

某公司(si)1200Nm3/h甲醇制氫(qing)(qing)裝(zhuang)置(zhi)采(cai)用(yong)“6-1-3”變壓吸(xi)附提氫(qing)(qing)工藝(yi)，為(wei)異構化裝(zhuang)置(zhi)提供體積(ji)分數99.9%的(de)氫(qing)(qing)氣。從吸(xi) 附塔吸(xi)附再(zai)生過程程控閥的(de)切(qie)換，時(shi)間設定(ding)原則及“5-1-2”備用(yong)工序等幾個方面(mian)對(dui)甲醇制氫(qing)(qing)裝(zhuang)置(zhi)中PSA提氫(qing)(qing)工藝(yi)開工過程進行介(jie)紹。 開工初(chu)期，裝(zhuang)置(zhi)運行穩定(ding)，氫(qing)(qing)氣純度≥99.9%，回收(shou)率(lv)高(gao)達92%，為(wei)后續異構裝(zhuang)置(zhi)提供穩定(ding)的(de)氣源(yuan)。

發布時(shi)間： 2021-01-15 16:47

利(li)用發動機(ji)余熱將(jiang)甲(jia)醇裂解(jie)生成裂解(jie)氣(qi)，再(zai)導入發動機(ji)缸內燃燒是甲(jia)醇應(ying)用的(de)(de)(de)(de)(de)一種(zhong)重(zhong)要(yao)形式，對實現節能減排有著極(ji)為重(zhong)要(yao)的(de)(de)(de)(de)(de)理論與現實意義，而其(qi)催化劑(ji)的(de)(de)(de)(de)(de)性(xing)(xing)能在(zai)整個醇氫動力系(xi)統(tong)中起著至關(guan)重(zhong)要(yao)的(de)(de)(de)(de)(de)作(zuo)用。銅基催化劑(ji)因其(qi)較高的(de)(de)(de)(de)(de)低(di)(di)溫(wen)活性(xing)(xing)和價格低(di)(di)廉獲得了(le)廣泛的(de)(de)(de)(de)(de)應(ying)用。系(xi)統(tong)綜述了(le)甲(jia)醇裂解(jie)銅基催化劑(ji)的(de)(de)(de)(de)(de)研(yan)究(jiu)現狀及催化劑(ji)制(zhi)備過程中各種(zhong)因素對活性(xing)(xing)、選擇(ze)性(xing)(xing)和穩定性(xing)(xing)的(de)(de)(de)(de)(de)影響，并對車載甲(jia)醇裂解(jie)催化劑(ji)的(de)(de)(de)(de)(de)研(yan)究(jiu)方向(xiang)進行了(le)分(fen)析。

發(fa)布時間： 2021-01-14 15:10

以甲醇(chun)和水為原料，Cu 為催化劑進行連續性(xing)的工業(ye)化生產(chan)氫(qing)氣中，最重(zhong)要(yao)的就是(shi)產(chan)品(pin)純度(du)的控制，從而達到最終產(chan)品(pin)的質量合(he)格。文章主要(yao)討論了甲醇(chun)制氫(qing)工藝中水醇(chun)比、壓力、Cu 催化劑活性(xing)、PSA 工藝等因(yin)素對產(chan)品(pin)氫(qing)氣純度(du)影響。

發布時(shi)間(jian)： 2020-12-26 08:13