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Hydroprocessing catalysts and their production

A technology of hydroprocessing and catalyst, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, catalyst protection, etc.

Active Publication Date: 2015-07-22
EXXON RES & ENG CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is believed that the concept of using an inorganic phase as a templating agent for another inorganic phase has never been documented before in the literature

Method used

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  • Hydroprocessing catalysts and their production
  • Hydroprocessing catalysts and their production
  • Hydroprocessing catalysts and their production

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Experimental program
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Effect test

Embodiment 1

[0048] Ni was prepared according to the procedure described in U.S. Patent Application Publication No. 2007 / 0090023 1 Mo 0.5 W 0.5 o 4 combination. The Ni 1 Mo 0.5 W 0.5 o 4 Pellet vulcanization. The furnace is used to contain approximately 10 vol% H 2 Flow of S (~200cm 3 / min) hydrogen purge for about 15 minutes. Place these pellets in the same flow (~200cm 3 / min)~10vol%H 2 S (the margin is H 2 ) from ambient temperature (about 20-25°C) to about 400°C in about 45 minutes and held at about 400°C for about 2 hours. These pellets are then cooled and flowed (~200cm 3 / min)~10vol%H 2 S (the margin is H 2 ) at ambient temperature for approximately 30 minutes. Use the furnace with flow (~300cm 3 / min) nitrogen purge for about 30 minutes. Finally, these pellets are placed in a flow (~50cm 3 / min)~1vol%O 2 (the balance being He) overnight and then removed from the furnace.

[0049] 4 to 5 passivated sulfide Ni using an agate mortar and pestle 1 Mo 0.5 W 0.5 T...

Embodiment 2

[0051] performed involving fresh Ni 1 Mo 0.5 W 0.5 o 4 Serial Time-Temperature-Transition Study of Vulcanization of Compositions. Pellets of fresh oxide were prepared again according to US Patent Application Publication No. 2007 / 0090023. In all cases oxide pellets were prepared and subjected to TEM examination as described above. Image a randomly selected area in an oxide sample and use a Gatan CCD TM Camera and Gatan's Digital Micrograph TM v.2.5 software plots their position on the TEM grid. through the flowing (~20cm 3 / min)~10vol%H 2 S (the margin is H 2 ) at approximately 2 °C / min to heat all TEM grids to vulcanize them. Vulcanization time and temperature were varied in each case to better evaluate Ni x S and MoS 2 / WS 2 Particles formed. Details of each vulcanization study are described below.

[0052] In the first study, TEM grids of fresh oxides were sealed in a reactor at ambient temperature with a flowing (~50 cm 3 / min) nitrogen purge for about 30 m...

Embodiment 3

[0056] Re-preparation of Ni using the aforementioned procedure 1 Mo 0.5 W 0.5 o 4 and in a flowing (~20cm 3 / min)~10vol%H 2 S (the margin is H 2 ) to about 400°C for about 2 hours. The vulcanized material was prepared and examined in TEM as described above. Conventional TEM observations consistently reveal that with Ni x S particle-adjacent curved MoS 2 / WS 2 Particles and Ni-depleted in the catalyst x Relatively straight (non-curved) MoS in the S region 2 / WS 2 particles (see Figure 6 ). Ni was confirmed by TEM tilt experiments x S particles and MoS 2 / WS 2 Relationship between particle curvatures. Figure 7 Poor Ni x Typical straight MoS formed in the S region 2 / WS 2 particle form. These two interpenetrating MoS 2 / WS 2 The structure further confirms that these particles are in Ni-poor catalysts x The tendency of the S region to grow in a relatively straight (non-curved) structure (see Figure 7 ). Figure 8 Show next to Ni x Curved MoS formed by...

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Abstract

In a process for producing a hydroprocessing catalyst, a particulate metal oxide composition comprising an oxide of at least one first metal selected from Group 6 of the Periodic Table of the Elements can be mixed with particles of a sulfide of at least one second metal selected from Groups 8 to 10 of the Periodic Table of the Elements to produce a particulate catalyst precursor. The particulate catalyst precursor can then be sulfided under conditions sufficient to at least partially convert the particulate catalyst precursor into a layered metal sulfide having defect sites associated with the second metal sulfide.

Description

technical field [0001] This invention relates to hydroprocessing catalysts and their manufacture. Background technique [0002] Hydrotreating catalysts typically comprise one or more sulfided Group 6 metals and one or more Group 8 to 10 metal promoters on a refractory support such as alumina. Bulk unsupported catalysts are also known. Hydroprocessing catalysts particularly suitable for hydrodesulfurization as well as hydrodenitrogenation typically comprise molybdenum and / or tungsten sulfides promoted by metals such as cobalt, nickel, iron, or combinations thereof. These sulfided catalysts generally have a layered or flake-like morphology. [0003] Current research into hydroprocessing catalysts is driven by the need to produce distillate fuels with lower sulfur and nitrogen contents required by environmental regulations, while meeting refiners' needs to process crude oils with greater amounts of these heteroatoms. There is therefore a great need to find catalysts that can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/85B01J23/883B01J23/888B01J27/043B01J27/049C10G49/04C10G49/06C10G45/08
CPCC10G2300/70B01J35/002C10G2300/202B01J33/00B01J37/10B01J35/0046B01J27/0515B01J37/04C10G49/06B01J37/14C10G45/08B01J23/8885C10G45/10C10G49/04B01J37/20B01J35/391B01J35/30
Inventor C·E·克利韦尔S·L·舍莱德S·米塞奥J·S·贝克
Owner EXXON RES & ENG CO