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yingxingwang銀蟲(chóng) (小有名氣)
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[求助]
二甲醚的文獻(xiàn)
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The FT-IR results are shown in Fig. 3. The peaks at around 710,530 and 463 cmÀ1 are characteristic of cryptomelane and are in-volved in the vibrations of the MnO6 octahedral framework[12,25,26]. The peak positions for M-OMS-2 slightly shifted to higher wavelength of 712, 530, 469 cm-1 when compared to those of OMS-2. Fig. 4 shows the nitrogen adsorption–desorption isotherms of the catalysts and the specific surface areas of the catalysts are listed in Table 1. It can be seen from Table 1 that the doping of metals has little impact on the surface areas of the M-OMS-2 catalysts.The isotherms show a characteristic of type II isotherm pattern, with a hysteresis loop of type H3 in the IUPAC classification, which is usually associated with the adsorption on aggregates of particles with a layered morphology, forming slit-like pores [27]. The results are similar to those of the reported K-OMS-2 and Ti-OMS-2 [17]. The TEM images of the M-OMS-2 catalysts are shown in Fig. 5(the image of Cr-OMS-2 is shown in Supplementary data, Fig. S2).All the M-OMS-2 catalysts show a rod-like morphology with a length ranging from 50 to 220 nm and a diameter of about 13 nm. No agglomerated particles corresponding to the doped metal oxide were found. |
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【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
愛(ài)與雨下: 金幣+1 2013-03-31 14:05:49
yingxingwang: 金幣+20, 翻譯EPI+1, ★★★很有幫助 2013-04-01 18:33:06
愛(ài)與雨下: 金幣+1 2013-03-31 14:05:49
yingxingwang: 金幣+20, 翻譯EPI+1, ★★★很有幫助 2013-04-01 18:33:06
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傅里葉變換紅外光譜結(jié)果如圖3.頂點(diǎn)大約在710530和463.1是錳鉀礦的特征峰，包含在MnO6八面體結(jié)構(gòu)中。 M-OMS-2的位置與OMS-2相比輕微的向712530469偏移。圖4是催化劑氮?dú)馕矫摳降葴鼐�，催化劑的表面積在表1.從表1可以看出金屬雜質(zhì)對(duì)M-OMS-2催化劑表面積幾乎沒(méi)有影響。等溫線是 II 型等溫線，有一個(gè)滯環(huán)，這通常與吸附劑的聚集有關(guān)，形成類(lèi)似空穴結(jié)構(gòu)。這與K-OMS-2 Ti-OMS-2的文獻(xiàn)結(jié)果報(bào)道一致。 M-OMS-2催化劑的tem圖片在表5.（Cr-OMS-2的照片在附表2）。所有的M-OMS-2催化劑顯示具有長(zhǎng)度50到220nm和直徑13nm的棒狀型態(tài) 在改性金屬氧化物中沒(méi)有發(fā)現(xiàn)團(tuán)聚顆粒。 |
2樓2013-03-31 11:12:13
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