RN-32V was a catalyst newly developed by the Research Institute of Petroleum Processing for gas oil hydrotreating,and was first commercially applied at a 400kt/a gas oil hydrotreating unit of Sinopec Jinan Company,which was revamped from a 600kt/a diesel fuel hydrogenation unit.
Under the following reaction conditions:access temperature of reactor was 30 ℃, LHSV was 3.0~4.0 h~ -1,pressure was 3.0 MPa, V(H_2)/V(C_4) was 200,the results of C_4(the mass fraction of p-olefin was 10.35%~12.38%)hydrogenated showed that the fractional conversion of olefin to alkane reached to 100%.
The results showed that adding antioxidant 2246-S and antioxidant RHY 510(mass fraction 0.25%) to hydrogenated base oil,the induction period of five lubricating base oil such as HVIW H 125,HVIW H 150,HVIW H 500,KN 4006 and KN 4010 increased from 27～88 min to 226～397 min;
Examining the reaction mechanism of Co Mo/TiO 2 catalyst and various factors effecting the said reaction,this paper showed that the new type catalyst is noted for its non presulfurizing process and excellent initial activity,unpossessed by traditional Co Mo/Al 2O 3 hydro conversion catalyst in the process of hydrodesulfurization(HDS).
The commercial hydro pretreating running showed that at a hydrogen partial pressure of 1.8MPa, a reaction temperature of 285℃, a hydrogen/oil volume ratio of 180-200 and a volume space velocity of 3.8-3.9h -1 , treating a feedstock blended with 5%-35% hydrotreated coker naphtha resulted in a refined oil containing both sulfur and nitrogen less than 0.5μg/g, which fulfilled the demand of reformer feedstock.
The reported method1 of their synthesis involves hydrogenation at high temperature and pressure.
Liquid-Phase Hydrogenation of Chloronitrobenzene Over Pt-Sn-B Amorphous Catalyst Supported by Carbon Nanotubes
Its catalytic performance was evaluated by liquid-phase hydrogenation of chloronitrobenzene (CNB).
The results showed that the catalyst had higher catalytic performance than common hydrogenation catalysts.
The conversion of CNB could reach 99.9%, and the dechlorination of chloroaniline (CAN) was less than 1.9% when catalyzed by Pt-Sn-B/CNTs and more than 8.0% when catalyzed by common hydrogenation catalysts.
It is a promising support for cracking and hydrotreating catalysts.
The mechanism of thiophene hydrodesulfurization over sulfide catalysts for hydrotreating and the effect of the catalyst composition and feed on the number, distribution, and performance of active sites were studied using 35S and 3H isotopes.
Based on the results of radioisotopic study, a method for systematic testing-monitoring of sulfide Co(Ni)Mo catalysts for hydrotreating is developed.
The hydrotreating activity of the catalysts was proportional to the amount of hydrogen consumed in the range 20-500°C during TPR.
Hydrotreating Ni heteropolytungstate catalysts have been prepared by impregnation of γ-Al2O3-alumina with solutions of H3PW12O40 acid and its Ni salt.
Compounds Ia-Ih were hydrogenated with Pd-C to give IIa-IIh, and their hypoglycemic activity was evaluated with a glucose oxidase kit and insulin load test on normal mice.
The optical absorption edge and the photoluminescence spectra of amorphous hydrogenated diamond-like carbon (a-C:H) films are investigated in the temperature range 4.2-900 K.
It is found that amorphous hydrogenated silicon (a-Si:H) films with a thickness d >amp;lt; 100 ? exhibit quantum-confinement effects.
Structural and Chemical Features of Silicon Nanocrystallites in Nanocrystalline Hydrogenated Silicon Thin Films
Hydrogenated nanocrystalline silicon (nc-Si:H) thin films were deposited on Si wafers at room temperature by plasma-enhanced chemical vapor deposition (PECVD): a mixture of SiH4 and H2 was introduced into the evacuated reaction chamber.
Effect of soil water changes on photosynthetic characteristics of Taxodium distichum seedlings in the hydro-fluctuation belt of
Four different kinds of water treatment were applied to examine the photosynthetic characteristics of baldcypress (Taxodium distichum) seedlings in the hydro-fluctuation belt of the Three Gorges Reservoir area.
distichum takes on the features of a water-tolerant and hydrophilic plant, which can be considered as one of the species for the building of a forest protection system for the hydro-fluctuation belt in the Three Gorges Reservoir area.
Four different kinds of water treatments were applied to study the photosynthetic eco-physiological characteristics of Taxodium ascendens seedlings in the environment of the Three Gorges hydro-fluctuation belt.
To establish a protection forest system in the hydro-fluctuation belt in the Three Gorges Reservoir Area, the species T.