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Synthesizing and utilizing novel ruthenium nanoparticle-activated charcoal-nano-zinc oxide composite catalyst

A technology of composite catalysts and nanoparticles, applied in physical/chemical process catalysts, catalyst activation/preparation, organic chemistry, etc., can solve problems such as high operating costs and complex production processes

Inactive Publication Date: 2015-07-22
KING ABDULAZIZ CITY FOR SCINCE & TECH (KACST)
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  • Abstract
  • Description
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Problems solved by technology

The production process is complicated and the operation cost is high

Method used

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  • Synthesizing and utilizing novel ruthenium nanoparticle-activated charcoal-nano-zinc oxide composite catalyst
  • Synthesizing and utilizing novel ruthenium nanoparticle-activated charcoal-nano-zinc oxide composite catalyst
  • Synthesizing and utilizing novel ruthenium nanoparticle-activated charcoal-nano-zinc oxide composite catalyst

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Embodiment Construction

[0060] The present invention discloses methods, compositions and processes for the synthesis of novel ruthenium-activated carbon-nano-ZnO (n-Ru / AC / n-ZnO) composite catalysts and the use of said novel composite catalysts to increase the production of MIBK and other by-products several implementations. While embodiments of the present invention have been described with reference to specific exemplary embodiments, it will be evident that various modifications and changes may be made to these embodiments without departing from the broader spirit and scope of the various embodiments.

[0061] Preparation of (n-Ru / AC / n-ZnO) composite catalyst:

[0062] Materials - Acetone (Winlab HPLC grade, +99.8%), hydrogen gas (99.999%), sodium pyruvate (Sigma-Aldrich, ≥99%), hydroxylamine hydrochloride (Carlo Erba, 99%), sodium bicarbonate (Fluka, ≥99.5 %), zinc sulfate heptahydrate (BDH, 99.5%), and 5% ruthenium on activated carbon composite catalyst (n-Ru / AC, Winlab) are commercially availabl...

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Abstract

Ruthenium / activated charcoal (Ru / AC) treated with synthesized nano -ZnO ( n -ZnO) is used for the first time as a novel composite catalyst in one-step self-condensation of acetone (DMK) to methyl isobutyl ketone in the gas phase. The DMK self-condensation was performed under atmospheric pressure, in a tubular glass fixed-bed microreactor, under DMK and H 2 continuous flow at temperature in the range of 523 to 648 K. Addition of n -ZnO to Ru / AC resulted in a pronounced increase in the degree of dispersion of Ru and in the acidic / basic sites concentration ratio. For the one-step synthesis of MIBK at 623 K, the composite catalyst with 2.5 wt% Ru loading was an active and selective bi-functional composite catalyst with balanced acid / base and hydrogenation properties. At 523 K, isopropyl alcohol, product of DMK-direct hydrogenation, was produced in high selectivity for instantly investigated composite catalyst. The catalytic performance depended on the composite catalyst identity, DMK flow rate, H 2 flow rate, and reaction temperature.

Description

[0001] References to related applications [0002] This application claims priority to what is now published US Patent Application Serial No. 13 / 095417, filed April 27, 2011. The entire content of pending US application 13 / 095417 and its entire teachings are hereby incorporated by reference. technical field [0003] The present invention generally relates to the synthesis of ruthenium nanoparticle-activated charcoal-nano-zinc oxide composite catalyst (ruthenium nanoparticle-activated charcoal-nano-zinc oxide composite catalyst) and the utilization of said novel composite catalyst to increase methyl isobutyl ketone (MIBK) Or the production of isopropanol (IPA). Background technique [0004] Low-priced acetone (dimethyl ketone, DMK) is converted into high-value fine chemicals such as methyl isobutyl ketone (MIBK), diisobutyl ketone (DIBK), fo Hydrogen ketone (PH), and alpha-isophorone (IPH) are a current challenge for the industry. [0005] MIBK is an important product deri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/60C07C49/04C07C49/203C07C45/74C07C31/10C07C29/145C07C15/02C07C1/20
CPCB01J23/60B01J37/031B01J37/04B01J21/18
Inventor 阿卜杜拉阿齐兹·A·巴加巴斯穆罕默德·默克塔尔·穆罕默德·穆斯塔法阿布杜尔拉曼·A·阿尔-拉比阿阿克莫多夫·瓦吉夫·莫利克
Owner KING ABDULAZIZ CITY FOR SCINCE & TECH (KACST)
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