熱沉澱反應 的英文怎麼說

中文拼音 [rèchéndiànfǎnyīng]
熱沉澱反應 英文
thermal precipitation
  • 沉 : Ⅰ動詞1 （沉沒; 墜落） sink 2 （沉下 多指抽象事物） keep down; lower 3 [方言] （停止） rest Ⅱ形容...
  • 反 : Ⅰ名詞1 （方向相背） reverse side 2 （造反） rebellion 3 （指反革命、反動派） counterrevolutionari...
  • 應 : 應動詞1 （回答） answer; respond to; echo 2 （滿足要求） comply with; grant 3 （順應; 適應） suit...
  • 沉澱 : 1 （沉澱過程中析出的物質） sediment; precipitate; sedimentary accretion; precipitation; （doposit...
  1. In this paper, concentrated sulfuric acid and titanium dioxide are used to prepare the tios04 solution that test later required under long time heat. the influences of reaction time and reaction temperature to yield of tioso4 are discussed. in the experiment of preparing tio2 powder, reaction temperature, ph values, material ratio, operation way, velocity of feed, calcining heat and time are researched by the principle of nucleation and growth in thermodynamics and kinetics

    在制備tio _ 2粉體實驗中，根據成核生長的熱力學和動力學原理，深入分析了沉澱反應時環境的溫度、 ph值、反應物配比、操作方式、加料速度等因素對ti （ oh ） _ 4粒度的影響，以及焙燒溫度和保溫時間等因素對制得的納米tio _ 2粉體性能的影響，得出了制備銳鈦型納米tio _ 2粉體的優化工藝條件。
  2. In this paper, co3o4 nano - particles were prepared by homogeneous precipitation method, technical conditions and kinetics were studied, the main contents and results are as follows : co ( no3 ) 2 6h2o was used as raw materials, and co ( nh2 ) 2 was used as precipitator, co3o4 nano - particles were prepared by homogeneous precipitation. the influences of concentration, molar ratio of reactants, reaction temperature and time, dryness temperature and time, and calcining temperature and time on particle size were investigated

    本文採用均勻沉澱法制備納米co _ 3o _ 4粉體材料，研究了制備工藝條件、沉澱反應和前驅體熱分解過程的動力學，主要研究內容及結果如下：以硝酸鈷為原料，尿素為沉澱劑，採用均勻沉澱法制備納米co _ 3o _ 4 ，考察了硝酸鈷濃度、反應物摩爾比、反應溫度和時間、乾燥溫度和時間、煅燒溫度和時間等條件對產物粒徑的影響。
  3. In this paper srco3 powders are first time synthesized successfully by low temperature solid state reaction with srcl2. 6h2o and ( nh4 ) 2co3. the size of srco3 is about 30 - 50nm. compared with liquid state method, this method produces little conglomeration and is easy to synthesize nanopowders

    本論文根據低熱固相化學反應原理首次以srcl _ 2 ? 6h _ 2o和（ nh _ 4 ） _ 2co _ 3為原料成功合成了30 ? 50nm的srco _ 3粉體，克服了一般液相沉澱法易發生粉體團聚和難于制備納米級srco _ 3粉體的弊端，並通過研究找到了低熱固相反應終點的標志。
  4. In this paper, we have a dynamic model of coupled heat and mass transportation and chemical interaction, by using the dynamic model of heat and mass transportation, chemical interaction in porous media, and the porosity and permeability models on a spherical close pack arrangement of grains

    這里利用熱質流體輸運動力學模型與石英溶解與沉澱的化學動力學模型，以及多孔介質的本構關系，建立了一個熱質輸運、反應動力學藕合模型。
  5. ( 2 ) the affecting factors such as components in precipitation process, the add - on, add on of precipitator, calination temperature and calination time were studied in the preparation process of ceo2 nanoparticles. the tg was used to analyze the processor, the xrd, sem and tem were used to characterize the size of crystal type of products. by a series of designed experiments the interaction between different factors and impacts on the preparation of ceo2 nanoparticles were probed, and the optimum preparation condition was gotten

    （ 2 ）對納米二氧化鈰制備過程中可能的一些影響因素（反應組分的濃度，沉澱劑的加入量，焙燒溫度，焙燒時間等）進行了研究，並通過tg ? dta分析手段對前驅物進行熱重分析；用xrd 、 sem及tem等測試手段對產物的粒度和晶型進行分析；探索了各個因素對納米二氧化鈰制備的影響及各因素間的交互作用；確定了在該試驗條件下制備納米二氧化鈰比較優化的制備條件。
  6. Abstract : the equilibrium constant of carbonization reaction of lime white was calculated using three thermodynamics methods. the results indicate that the carbonization reaction of lim white was the neutralization reaction between acid and alkali first, and it was the transform reaction of precipitation second. the essential cognition of the carbonization reaction of lime white was deepend. it was of guiding significance for industrial production of light ( precipitation ) calcium carbonate

    文摘:用3種熱力學方法計算了石灰乳碳化反應的平衡常數，結果表明，石灰乳的碳化反應首先是酸堿的中和反應，其次才是沉澱的轉化反應，從而加深了對石灰乳碳化反應本質的認識，對輕質（沉澱）碳酸鈣的工業生產有指導意義
  7. Crystal structure and ceramoc microstructure of powder samples are examined by xrd and tem. the mean grain size of the materials ranges from 10nm to 50nm by controlling the reaction concentration and annealing temperature

    採用化學沉澱法成功地制備了納米晶zno粉體，根據不同反應物濃度和熱處理溫度的選取，晶粒尺寸控制在10 ? 50nm范圍內。
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