The alloy catalyst was found to be unstable in the acidic solution because of the electrochemical and chemical dissolution of the catalyst.

發(fā)現(xiàn)在酸性溶液中黄色网站欧美A，鈀鐵合金催化劑對(duì)氧還原反應(yīng)的催化活性不穩(wěn)定，原因是鈀鐵合金催化劑在酸性溶液中發(fā)生電化學(xué)/化學(xué)溶解在线露脸；在堿性溶液中隐私网占，覆蓋在電極表面的鈀鐵合金催化劑的質(zhì)量及電化學(xué)活性面積在電化學(xué)掃描過(guò)程中不發(fā)生明顯變化，保持對(duì)氧還原反應(yīng)的催化活性欧洲老妇交配，證明鈀鐵合金催化劑在堿性介質(zhì)中非常穩(wěn)定国产精品专区第102页。

At present,the rate laws and reaction mechanisms of pyrite oxidation,pyrite and chalcopyrite formation,uraninite and magnetite dissolution in aqueous solutions are mainly studied,and it is discovered that (1)oxidation rate of pyrite controlled by surface reaction assume fractional dependence on Fe3+ and O2 molalities in acid solutions;(2)Pyrite cannot nucleate directly from solutions below 300 ℃,it can only form initially through sulfidation of a FeS precursor. The rate equation of reaction between FeS and H2S to form pyrite is of the second order;(3)Chalcopyrite is formed by reactions of pyrrhotite or pyrite with Cu2+,the former proceeds via a series of mediate metastable phases of Cu-Fe sulfide,whereas the rate equation of the latter is apparently of the first order which is controlled by surface reaction;(4)The nonlinear behavior of magnetite dissolution at acid pH can be represented by a shrinking core model coupling with surface reaction and diffusion transport.

目前主要研究了水溶液中黃鐵礦氧化、黃鐵礦和黃銅礦形成宗合久网、晶質(zhì)鈾礦和磁鐵礦溶解的速率定律和反應(yīng)機(jī)理国语精品91自产拍在线，發(fā)現(xiàn)：(1)酸性溶液中黃鐵礦的氧化速率對(duì)Fe3+和O2濃度呈分?jǐn)?shù)依賴并受表面反應(yīng)的控制；(2)低于300 ℃時(shí)黃鐵礦不能從溶液中直接成核你懂的福利，而需初始地通過(guò)FeS先驅(qū)物的硫化生成操女生的视频，F(xiàn)eS與H2S反應(yīng)形成黃鐵礦的速率方程為二級(jí)；(3)磁黃鐵礦或黃鐵礦與Cu2+反應(yīng)均可形成黃銅礦亚洲爱爱视频网址，前者經(jīng)歷了一系列準(zhǔn)穩(wěn)的Cu-Fe硫化物的中間物国产亚洲91在线，后者的速率方程為表觀一級(jí)并受表面反應(yīng)的控制；(4)酸性pH時(shí)磁鐵礦的非線性溶解行為可采用表面反應(yīng)擴(kuò)散輸運(yùn)耦合的收縮核模型來(lái)描述美国免费黄片。

This paper discussed the processing mechanism and instanced some vanishing cream and shampoo with acidic soap.

以酸性皂在雪花膏和香波中的應(yīng)用為研究對(duì)象www.jiuse91.com，列舉了酸性皂應(yīng)用在化妝及洗滌類產(chǎn)品中自然形成珠光的實(shí)例。

Methods Under the acid condition, fluorine could be separated by distillation, then fluorine is absorbed by washing liquid. The electricity lead detection-ion chromatogram with Ionpac AS14 column was employed to determine the content of fluoride, 3.5 mmol/L of sodium carbonate-1.0 mmol/L of soda as the washing liquid at 1.2 ml/ mm.

氟在酸性條件下欧美激情一区二区三区高清视频在线观看，蒸餾分離欧美在线黄片，蒸出的氟化氫被淋洗液吸收，采用電導(dǎo)檢測(cè)－離子色譜儀和IonpacAS14色譜柱蜜臀亚洲精品国产AⅤ综合第一，3.5 mmol/L碳酸鈉－1.0 mml/L碳酸氫鈉為淋洗液黑人一級黃片，流量為1.2 ml/min，樣品及標(biāo)準(zhǔn)系列在酸性條件下經(jīng)水蒸氣蒸餾－吸收亚洲精选无码精品，直接進(jìn)樣測(cè)定字幕中文在线。

It is liquid cleaner composed of surfactant likehigh-effective lotion, wetting agent foam-killing agent.

產(chǎn)品簡(jiǎn)介：酸性清洗劑是由高效酸性洗劑、潤(rùn)濕劑消泡劑等表面活性劑復(fù)配而成的液體清洗劑精品国产一区二区亚洲人成毛片。

The database is composed of 15 Acid dyes data, which are 9 Wood dyes and 6 Acid dyes originated from textile.

該數(shù)據(jù)庫(kù)中包括十五種單色酸性染料三级全黄的视频在线观看不卡，其中九種木材專用染料，六種沿用紡織中使用的酸性染料久久综合综合久久综合。

In order to study the effects of acid catalysts on wood liquefaction in phenol, the liquefaction of wood powder from Chinese fir and poplar in the presence of phenol using several relatively weak acids as catalysts, such as phosphoric acid (85%), sulfuric acid (36%), hydrochloric acid (37%) and oxalic acid (99%), were investigated.

為了探討酸性催化劑對(duì)木材苯酚液化的影響中文字幕第一页在线，該研究采用磷酸(85%)、低濃硫酸(36%)、鹽酸(37%)国产AⅤ精品一区二区四区、草酸(99.5%)4種弱酸性無(wú)機(jī)酸国产原创第一页，在不同溫度下進(jìn)行了木材的液化試驗(yàn)。

Most of the dyes tested can be degraded anaerobically in varying degrees, except 2 xanthene dyes, C. I. Mordant Red 15 and C. I. Acid Red 52, the former is even toxic to anaerobic process.

3大多數(shù)被試染料在厭氧條件下都具有不同程度的可降解性精品交在线视频，只有2種結(jié)構(gòu)為氧雜蒽的染料色五月开心天天，酸性媒介桃紅3BM和酸性玫瑰紅B，是難降解的色哟哟网址在线观看，前者對(duì)厭氧消化過(guò)程還具有毒性一级A片30分钟免费观看。

Tests for electrolytic oxidation of the two refractory xanthene dyes show that, artificial dye wastewater can be decolorized, while the result for practical dye waste water is not satisfactory.

對(duì)2種難降解染料（酸性媒介桃紅3BM和酸性玫瑰紅B）電解氧化的初步試驗(yàn)表明，電解氧化可有效地去除上述染料配水的色度偷窥偷拍综合，但對(duì)實(shí)際染料生產(chǎn)廢水的處理效果并不理想亚洲午夜视频国产A片。

FT-IR results show that in the strongly acidic、weakly acidic and basic solutions, the glycine exists in the form of cation草av在线、zwitterion and anion, respectively.

在強(qiáng)酸性影音先锋每日全部新资源、弱酸性和堿性溶液中，吸附態(tài)的甘氨酸分別主要以陽(yáng)離子999黄色com、兩性離子和陰離子形式存在欧美性爱激情图区。