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- 脱铝超稳Y沸石（DUSY） dealuminated USY(DUSY)
- 制备了一系列以脱铝超稳Y沸石(DUSY)为载体的磷钨酸(PW)及其铯盐催化剂,考察了催化剂在以乙酰乙酸乙酯和1,2-丙二醇为原料催化合成草莓酯反应过程中的性能。 A series of 12-phosphotungstic acid(PW)and their Cs salts catalysts supported on dealuminated ultra-stable Y zeolite(DUSY)were prepared. Their catalytic activities were measured by synthesis of fructone-B from ethyl acetoacetate and 1,2-propanediol.
- 超稳Y沸石负载硅钨酸 ultra stable Y zeolite supported silicotungstic acid
- 超稳Y沸石 ultrastable Y zeolite
- 超稳Y型沸石上的异辛烷裂化反应 CRACKING REACTION OF ISOOCTANE OVER ULTRASTABLE Y ZEOLITES
- 沸石负载壳聚糖 zeolite loads chitosan
- 超稳Y-沸石催化合成乙酰乙酸乙酯缩酮 Synthesis of Ethyl Acetoacetate Ketals Catalyzed by Dealuminated Ultrastable Y-Zeolite
- 超稳Y分子筛 ultrastable Y zeolite
- 选择Eu(DBM)3phen为客体,有序介孔氧化硅MCM-41和SBA-15为载体,分别在氯仿中进行分子组装,制备出具有较强发光性能的介孔复合材料Eu(DBM)3phen/APTES-MCM-41(EAM)和Eu(DBM)3phen/APTES-SBA-15(EAS)。 Eu(DBM)3phen complexes guests were assembled into the ordered mesoporous silica in chloroform to prepare the luminescent composites Eu(DBM)3phen/APTES-MCM-41 (EAM) and Eu(DBM)3phen/APTES-SBA-15 (EAS).
- 摘要本文用X射线衍射法定量分析了水泥水化产物中的钙矾石，得到了较为准确的结果，该方法对研究钙矾石的形成机理和膨胀机理提供了重要的参考依据，具有理论和实际意义。 Ettringite in cement hydration products "Value k" method of XRD and some accurate results were obtained. This method shows practically significant in studying the formation mechanism and stability of ettringite.
- 烷烃在超稳 Y 及 HY 型沸石上的催化裂化减活作用 Catalyst Deactivation of Ultra-stable Y and HY Type Zeolites for the Cracking of Hydrocarbon
- 以Y型沸石前驱体与有机硅氧烷为硅源,通过共水解-缩聚的方法合成了具有高水热稳定性的巯基(-SH)和磺酸基(-SO_3H)官能化的MSU型介孔硅基材料。 Using zeolite Y seeds and organotrialkoxysilane as silica sources, hydrothermally stable thiol- and sulfonic functionalized mesoporous silicas of MSU structure were prepared by a one-pot synthesis involving co-condensation of organotrialkoxysilane and tetraalkoxysilane and post oxidation.
- HY经脱铝制得高硅八面沸石,并经SiCl_4和(NH_4)_2SiF_6分别改性后的样品称之为Y(T)和FSY. 采用异丙苯裂化反应比较了它们的活性衰减与结焦之间的关系. Highly siliceous faujasite was prepared by dealumination of synthetic Y-type zeolite and was then modified with (NH_4)_2SiF_6. The decay of cracking activity and coke deposition on SiCl_4 modified zeolites,Y(T-1,2,3),were compared with those modified with SiF_6, FSY-l,2,3,by catalytic cracking of cumene in a continuous laboratory reactor.
- 采用水热焙烧和向H_2SiF_6-NH_3脱铝补硅超稳Y沸石体系中添加适量Al_2(SO_4)_3的方法制备出几种铝分布均匀的超稳Y沸石分子筛。 A few species of ultrastable Y zeolite with homogeneous aluminium distribution were prepared by means of combining hydrothermal roast and adding some A12(SO4)3 into the H2SiF6-NH3 dealumium ized and silicon enriched ultrastable Y zeolite slurry.
- 其次,稀土超稳Y沸石中总的非骨架铝(N_(Al))_EF,随脱铝深度的增加而增加,仅只在REUSY-38的~(27)Al MAS NMR谱中观察到Al~(a+)非骨架铝的存在. For the four REUSY zeolites, the total extra-framework aluminums (N_(Al))_(EF) increase with the increase of depth of dealumination, the (N_(AI))_(EF) appeared as Al~(3+) are only observed in ~(27)Al MAS-NMR of REUSY-38 spectrum.
- 本文用NH_3-TPD(氨的程序升温脱附)和FT-IR研究了三种不同硅铝比的超稳Y沸石的酸性质,并以正十六烷为探针反应研究了它们的催化性能。 The acidity of USY with different SIO_2/Al_2O_3 ratios was studied by NH_3-TPD and FT-IR,and the cracking of n-hexadecane was chosed as a probe rea- ction.
