Synthesis and Study of Ni-Mo-Co Catalysts for Hydroprocessing of Oil Fractions

Abstract

The problems of synthesis of Ni-Mo, Ni-Mo Co and Co-Mo oxide catalysts for hydrodesulfurization and hydrogenation of aromatic hydrocarbons in the composition of kerosene, diesel and oil fractions are discussed. The influence of spent adsorbent and kaolin as the additives on the physical-chemical and catalytic properties of bimetallic and trimetallic catalysts is established.

Experimental Evidence of Direct Influence of the Composition and Prepared Conditions on the Activity and Selectivity of Hydrotreating Catalysts

“…Note that bands of 417-435 nm and approx. 735-758 nm [3] are in keeping with Ni Td 2+ nickel ions in the structure closer to NiMoO 4 . The number of non-active spinel structures changed in a row as follows: "P"series > "C 2 "series > "C 2 " series ≥ Before testing their activity, the "F" series catalysts were calcinated at 823 K and the "C 1 > and "C 2 " series dried catalysts sulphided ex situ in a tube reactor at 400°C for 4 hours in a stream of 10 vol.…”

“…Carriers and catalysts were synthesized in line with our own technology [3]. A sample (Carrier №-1) was made up of a mixture of 55% of industrial aluminum hydrate (pseudoboehmite prepared on the basis of gibbsite by alkaline deposition; Ryazan, Russia), 10 % of kaolin ("Angren Kaolin" Ltd.) and 35 % of Аl 2 O 3 (developed adsorbent of the Shurtan Gas and Chemical Complex) followed by peptization with boric acid and hydrogen nitrate as well as shaping as Raschig rings or trefoil.…”

“…The wide absorption band at 510 nm with a shoulder around 469 nm corresponds to Со Td 2+ ions in the cobalt molybdate structure. The cobaltmolybdenum and nickel-molybdenum associates were identified by the presence of absorption bands in the zone of 312-345 nm [3]. Note that bands of 417-435 nm and approx.…”

Complex Processing of Adsorbent Used in the Purification of Hydrogen-Containing Gas

“…Diffraction patterns of the samples were obtained on a diffractometer (Empyrean Diffractometer), and thermograms on a HESON HS-TGA-103 derivatograph within the temperature range of 298-1273 K with a heating rate of 10 K/min. Electronic spectra of diffuse reflectance of indicators which were adsorbed to identify the main centers on the surface of the studied adsorbents, were recorded on a Hitachi-330 spectrometer [36,37].…”

Hydrodesulfurization of Gas Condensate containing Di-Sulfide Oil: Catalyst synthesis and evaluation

“…There are various methods for desulfurization of crude oil and its derivatives [10][11][12][13][14][15]. Although Tanimu et al generally reviewed the hydrodesulfurization (HDS) process which is the most efficient commercial technique but, the other researchers focused on the Co (Ni) Mo/Al 2 O 3 as catalyst for the hydrodesulfurization process [16][17][18][19]. In fact, the hydrodesulfurization is a reaction between sulfur compounds and hydrogen.…”