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zeolite     
相关语句
  沸石
     Synthesis and Properties of ZSM-5 Type Zeolite Membrane
     ZSM-5型沸石膜的合成、表征及反应性能研究
短句来源
     Preparation and Separation Studies on ZSM-5 Zeolite Membrane
     ZSM-5沸石膜的合成及渗透性能研究
短句来源
     Gas-Solid Synthesis, Characterization and Catalytic Properties of Ti-ZSM-5 Zeolite
     Ti-ZSM-5沸石的气固相法合成、表征和催化性能研究
短句来源
     Study on Friedel-Crafts Acylation of Aromatic Compounds Catalyzed by Zeolite Molecule Sieves
     沸石分子筛催化芳环化合物的Friedel-Crafts酰基化反应的研究
短句来源
     Investigation of Chemical States of Iron Species and Nature of Photocatalytic Property of ZSM-5 Zeolite
     ZSM-5沸石的铁物种化学状态及光催化作用本质研究
短句来源
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  分子筛
     The Low-temperature Combustion Reaction of Methane over Pd-supported Zeolite Catalysts
     甲烷低温燃烧反应分子筛负载Pd催化剂
短句来源
     Synthesis and Gas Separation Performance of Zeolite Membrane
     分子筛膜的合成及气体渗透分离性能
短句来源
     Studies of Solid-State MAS NMR on the Acidity in TS-1 Zeolite and Its Catalytic Oxidation of Styrene
     TS-1分子筛的酸性及其催化苯乙烯氧化反应的固体核磁研究
短句来源
     Study on DME Synthesis over Zeolite SUZ-4
     SUZ-4分子筛上二甲醚制备的研究
短句来源
     Study of Skeletal Isomerization of 1-Butene on MCM-49 and MCM-22 Zeolite Catalysts
     MCM-49和MCM-22分子筛催化剂上1-丁烯骨架异构化反应的研究
短句来源
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  沸石分子筛
     Occlusion of KNO_(3) and NH_(4)NO_(3) in 4A Zeolite Molecular Sieve
     4A沸石分子筛对KNO_3和NH_4NO_3的吸持作用
短句来源
     ASTUDY ON THE SYNTHESIS OF ZEOLITE ZSM-5 IN THE SYSTEM OF NH_4~+-TPA~+-SiO_2 -Al_2O_3 -H_2O
     NH_4~+-TPA~+-SiO_2-Al_2O_3-H_2O体系中ZSM-5沸石分子筛合成的研究
短句来源
     Preparation of zeolite NaY membrane on porous α-Al_2O_3tubes
     在多孔α-Al_2O_3陶瓷管上合成NaY沸石分子筛
短句来源
     2) the supercages surface hydroxyl of Pt/HY zeolite could react with SnMe_4, SnEt4, SnPr_4 and SnBu_4 at 193, 243, 273, 333 K, respectively.
     (2)发现Pt/HY沸石分子筛的超笼表面羟基可以与SnMe_4、SnEt_4、SnPr_4和SnBu_4分别在193、243、273和333 K发生化学反应。
短句来源
     Influences of Fe_2O_3 on synthesis and properties of 13X zeolite molecular sieve
     Fe_2O_3对13X沸石分子筛合成条件及性能的影响研究
短句来源
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  型沸石
     The Interaction Between La_2O_3 and Y Zeolite on La_2O_3/Y
     La_2O_3/Y沸石上La_2O_3与Y型沸石载体的相互作用
短句来源
     HETERO-ATOM ZEOLITE(Ⅳ)——A STUDY ON CRYSTALLIZATION-COMPONENT DIAGRAM OF THE MIXTURE REACTION IN NH_4OH-TPABr-(C_2H_5)_4SiO_4-H_3BO_3-H_2O SYSTEM
     杂原子分子筛(Ⅳ)——NH_4OH-TPABr-(C_2H_5)_4SiO_4-H_3BO_3-H_2O体系B-Si pentasil型沸石的晶化-反应物组成图
短句来源
     Preparations of zeolite ZSM-35 zembranes on porous α-Al_2O_3 tubes
     在多孔α-Al_2O_3陶瓷管上合成ZSM-35型沸石
短句来源
     STUDY OF INFRARED SPECTRUM ON HSW ZEOLITE ABSORBED C_2H_4
     C_2H_4在HSW型沸石上吸附的红外研究
短句来源
     A novel type of zeolite was synthesized in the system of Na2O-K2O-Al2O3-SiO2-H2O.
     在Na2O-K2O-Al2O3-SiO2-H2O体系中水热合成了一种新型的共生沸石,它由L型沸石生长在T型沸石的一端而形成,称之为T-L型沸石.
短句来源
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  zeolite
Study on catalytic synthesis of 1,3-benzodioxoles by HY zeolite
      
The acetalization and ketalization of various aldehydes and ketones with catechol by using HY zeolite as catalyst were studied.
      
Synthesis, characterization and catalytic properties of mesoporous MCM-48 containing zeolite secondary building units
      
Mesoporous aluminosilicate MCM-48 containing zeolite secondary building units in the pore wall has been synthesized in alkaline media with a two-step procedure.
      
Compared with the conventionally synthesized MCM-48, the as-synthesized MCM-48 sample showed an adsorption band at 520-600 cm-1 in its FT-IR spectrum, which was assigned to five-membered ring vibration from zeolite structure.
      
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(1) Cytochrome c containing 0.43% iron has been obtained from beef, pig or horse heart muscles by direct adsorption of the neutralized trichloroacetic acid extracts of heart muscle on the cation exchanger"synthetic zeolite" followed by elution with 3.84 M ammonium sulfate and precipitation with 20% trichloroacetic acid. This provides a simple method for large-scale preparation of pure cytochrome c. (2) The ratio of optical densities at 550 mμ(reduced) and 278 mμ of 0.43% iron cytochrome c varies, with...

(1) Cytochrome c containing 0.43% iron has been obtained from beef, pig or horse heart muscles by direct adsorption of the neutralized trichloroacetic acid extracts of heart muscle on the cation exchanger"synthetic zeolite" followed by elution with 3.84 M ammonium sulfate and precipitation with 20% trichloroacetic acid. This provides a simple method for large-scale preparation of pure cytochrome c. (2) The ratio of optical densities at 550 mμ(reduced) and 278 mμ of 0.43% iron cytochrome c varies, with its degree of reduction, from 1.13 to 1.26. The average ratio of our preparations is 1.23. (3) The absorption spectra(230-600 mμ) of oxidized and reduced cytochrome c have been measured. The molecular extinction coefficient at 550 mμ of oxidized, 0.43% iron, cytochrome c is 0.80×10~4. This value differs considerably from that reported in the literature. (4) Some enzymic properties of cytochrome c containing 0.43% iron are compared with those of a preparation containing 0.34% iron and are found to be identical. Both can be converted into''endogenous" cytochrome c. (5) Whether pure cytochrome c contains more than 0.43% iron has been discussed. It seems that no convincing evidence has been presented to show that cytochrome c preparations with iron content higher than 0.43% as obtained by some workers do not contain a small amount of iron-rich impurity.

(一)用陽離子交换劑(synthetic zeolite)直接吸附高等動物心肌抽提液一次,並用3.84M硫酸銨作洗脫劑,即可製得含鐵量0.43%的細胞色素c。因此提供了一個大量製備純細胞色素c的簡單方法。 (二)含鐵量0.43%的細胞色素c,它的550mμ和278mμ光密度的比值,視產品的還原程度而定,其範圍從1.13到1.26,我們所製得的產品,其比值在1.23左右。 (三)我們测量了氧化及還原的細胞色素c(含鐵0.43%)從230mμ到600mμ的吸收光譜,並發現和前人所報告的略有不同。氧化細胞色素c在550mμ的消光係數為0.80×10~4,此值與文獻上的數值相差很多。 (四)我們比較了含鐵量0.43%的細胞色素c和含鐵量0.34%的細胞色素c的一些酶性質,證明他們是相同的;並且兩者都可以變成“內源”細胞色素c。 (五)我們認為現有的實驗證據不足以說明純細胞色素c的含鐵量大於0.43%。

Using water geass as silica source, the synthesis of Y-type zeolite molecular sieve was studied. By addition of nucleation centers and reduction of basicity of reaction mixture, NaY zeolite molecular sieve having silica to alumina mole ratio >4 was readily obtained from a aqueous mixture of Na aluminate and water glass. As shown by experimental results, this method has advantages of reducing the cost of raw materials, shortening the period of synthesis and giving good reproducibility. The nature...

Using water geass as silica source, the synthesis of Y-type zeolite molecular sieve was studied. By addition of nucleation centers and reduction of basicity of reaction mixture, NaY zeolite molecular sieve having silica to alumina mole ratio >4 was readily obtained from a aqueous mixture of Na aluminate and water glass. As shown by experimental results, this method has advantages of reducing the cost of raw materials, shortening the period of synthesis and giving good reproducibility. The nature and role of the nucleation centers were also discussed.

本工作研究了以水玻璃作为二氧化硅原料合成Y型沸石分子筛。采用添加晶核中心和降低反应混合物碱度,由水玻璃和铝酸钠的水混合物很易制得硅铝比大于4的NaY沸石分子筛。实验结果表明,这个方法具有原料价廉,合成周期短和重复性好的优点。对于晶核中心的性质和作用还作了讨论。

Using water geass as silica source,the synthesis of Y-type zeolite molecular sieve was studied.By addition of nucleation centers and reduction of basicity of reaction mixture,NaY zeolite molecular sieve having silica to alumina mole ratio>4 was readily obtained from a aqueous mixture of Na aluminate and water glass.As shown by experimental results,this method has advantages of reducing the cost of raw materials,shortening the period of synthesis and giving good reproducibility.The nature and role...

Using water geass as silica source,the synthesis of Y-type zeolite molecular sieve was studied.By addition of nucleation centers and reduction of basicity of reaction mixture,NaY zeolite molecular sieve having silica to alumina mole ratio>4 was readily obtained from a aqueous mixture of Na aluminate and water glass.As shown by experimental results,this method has advantages of reducing the cost of raw materials,shortening the period of synthesis and giving good reproducibility.The nature and role of the nucleation centers were also discussed.

本工作研究了以水玻璃作为二氧化硅原料合成 Y 型沸石分子筛。采用添加晶核中心和降低反应混合物碱度,由水玻璃和铝酸钠的水混合物很易制得硅铝比大于4的 NaY 沸石分子筛。实验结果表明,这个方法具有原料价廉,合成周期短和重复性好的优点。对于晶核中心的性质和作用还作了讨论。

 
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