排序方式: 共有55条查询结果,搜索用时 0 毫秒
1.
Kinetics and Catalysis - The subject of this review is related to the development of research on the mechanism of interaction of platinum complex compounds, primarily, H2[PtCl6], with alumina... 相似文献
2.
Belskaya O. B. Nizovskii A. I. Gulyaeva T. I. Leont’eva N. N. Bukhtiyarov V. I. 《Russian Journal of Applied Chemistry》2020,93(1):118-126
Russian Journal of Applied Chemistry - The products of the interaction of activated aluminum with water were used as a precursor of an oxide support of catalysts. The possibility of changing the... 相似文献
3.
Kinetics and Catalysis - The results of studies in the field of synthesis and characterization of layered double hydroxides (LDHs) obtained using solid-phase reactions are summarized. The effect of... 相似文献
4.
WANG Shou-Xin FU Yi-Feng FAN Zhi-Jin MI Na ZHANG Hai-Ke SONG Hai-Bin Belskaya N.P Bakulev V.A 《结构化学》2011,30(2)
The title compound naphthalen-2-y1-4-methy1-1,2,3-thiadiazole-5-carboxylate(C14H10N2O2S,Mr = 270.31)was synthesized by the reaction of 4-methyl-1,2,3-thiadiazole-5-carbonyl chloride with 2-naphthol,and its structure was characterized by IR,1H NMR,high-resolution mass spectrometry and single-crystal X-ray diffraction.The crystal belongs to orthorhombic,space group Pbcn with a = 23.475(5),b = 9.6640(19),c = 10.814(2)(A°),β = 90.00°,Z= 8,V= 2453.2(9)(A°)3,Mr = 270.30,Dc = 1.464 g/cm3,μ= 0.262 mm-1,F(000)= 1120,R = 0.0444 and wR = 0.1099.X-ray analysis revealed that the thiadiazole and naphthalene rings were non-planar,while,the thiadiazole ring and the ester group were essentially planar,and two intermolecular hydrogen bonds C(6)-H(6)…O(1)and C(14)-H(14)…O(1)were observed.The preliminary biological test showed that the title compound had antifungal and antivirus activities against tobacco mosaic virus. 相似文献
5.
M. O. Kazakov A. V. Lavrenov I. G. Danilova O. B. Belskaya V. K. Duplyakin 《Kinetics and Catalysis》2011,52(4):573-578
The acidic and hydrogenating of Pt/SO42−-ZrO2-Al2O3 samples containing from 18.8 to 67.8 wt % Al2O3 as a support constituent were studied by the IR spectroscopy of adsorbed CO and pyridine, and the model reactions of n-heptane and cyclohexane isomerization on these catalysts were examined. The total catalyst activity in the conversion of
n-heptane decreased with the concentration of Al2O3; this manifested itself in an increase in the temperature of 50% n-heptane conversion from 112 to 266°C and in an increase in the selectivity of isomerization to 94.2%. In this case, the maximum
yield of isoheptanes was 47.1 wt %, which was reached on a sample whose support contained 67.8 wt % Al2O3. A maximum yield (69.6 wt %) and selectivity (93.7%) for methylcyclopentane formation from cyclohexane were also reached
on the above catalyst sample. This can be explained by lower concentrations of Lewis and Br?nsted acid sites in the Pt/SO42−-ZrO2-Al2O3 system, as compared with those in Pt/SO42−-ZrO2. The experimental results allowed us to make a preliminary conclusion that the Pt/SO42−-ZrO2-Al2O3 catalyst whose support contains 67.8 wt % Al2O3 is promising for use in the selective hydroisomerization of benzene-containing gasoline fractions in the thermodynamically
favorable process temperature range of 250–300°C. 相似文献
6.
O. B. Belskaya N. N. Leont’eva T. I. Gulyaeva S. V. Cherepanova V. P. Talzi V. A. Drozdov V. A. Likholobov 《Russian Chemical Bulletin》2013,62(11):2349-2361
Influence of the nature of a doubly charged cation in the layered double hydroxides (LDH) on the conditions of formation and properties of mixed oxide phase MAlO x (M = Mg2+, Zn2+ and Ni2+), its ability to reconstruct the structure of the original precursor under contact with water has been studied. Hydrotalcite-like compounds and corresponding oxides with different M2+: M3+ ratio were investigated by XRD, TEM, TG-DTG-DTA, 27Al NMR, N2 adsorption, and differentiating dissolution. It has been found that the nature of the cation M2+ influences the conditions of LDH thermal decomposition, structural and textural characteristics of the formed mixed oxides. The obtained data can be used to synthesize the oxide supports with desired acid-base and adsorption properties. 相似文献
7.
Kazak N. V. Belskaya N. A. Moshkina E. M. Solovyov L. A. Eremin E. V. Gavrilkin S. Yu. Ovchinnikov S. G. 《JETP Letters》2021,113(2):92-101
JETP Letters - Recent theoretical ideas concerning the mechanism of the electromagnetic proximity effect in hybrid superconducting structures with ferromagnetic layers, as well as the problem of... 相似文献
8.
The Pt/MgAlO x catalysts, in which a mixed aluminum–magnesium oxide obtained by the heat treatment of corresponding layered double hydroxides was used as a support, were studied. The effects of the nature of active-component precursors ([PtCl6]2–, [PtCl4]2–, and [Pt3(CO)6] 6 2- ), and the Mg/Al ratio in the support on the anchoring of complexes, the disperse state of platinum, and the properties of the obtained catalysts in the reactions of propane and n-decane dehydrogenation were found. 相似文献
9.
E.?A.?RaiskayaEmail author G.?G.?Saveleva V.?A.?Drozdov O.?B.?Belskaya 《Russian Journal of Applied Chemistry》2017,90(12):1969-1973
Samples of microporous materials were prepared by pyrolytic deposition of carbon from divinyl in a fluidized bed reactor onto carbon supports obtained from coconut and pine nut shells. The influence exerted on the adsorption capacity for CO2 by the divinyl pyrolysis temperature (in the range 600–750°С) and degree of densification (in the range 6–22%) was studied. Carbon deposition conditions ensuring the specific surface area (SBET) lower than 5 m2 g–1 at the adsorption capacity for СО2 higher than 1 mmol g–1 for both samples were found. 相似文献
10.
O. B. Belskaya N. N. Leont’eva T. I. Gulyaeva V. A. Drozdov V. P. Doronin V. I. Zaikovskii V. A. Likholobov 《Kinetics and Catalysis》2011,52(5):761-769
A layered aluminum-magnesium hydroxide of the hydrotalcite type containing interlayer carbonate counterions (HT-CO3) and activated hydrotalcite containing interlayer OH− ions (HT-OH) were studied for the subsequent use as the precursors of supports for platinum catalysts. It was found that
the nature of an interlayer anion in the composition of an aluminum-magnesium layered hydroxide is an important factor affecting
both the formation of the oxide support and its texture characteristics. The replacement of the interlayer CO32− anion by OH− resulted in changes in the structural parameters of the initial double hydroxide: a decrease in the interlayer distance with
the retention of the Mg/Al ratio and an increase in the imperfection of the layered material. X-ray diffraction studies in
the temperature range of 30–900°C showed that HT-OH is characterized by the ability to form low-temperature spinel at 375°C.
As a result, two types of aluminum-magnesium oxide supports, which were characterized by different pore space organizations
at the same Mg: Al ratio, were obtained from the given layered hydroxides. 相似文献