Research Institute of Petroleum Industry RIPI

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Tehran, Iran
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A new, green, and efficient method for synthesis of a variety of N-substituted pyrroles from condensation reactions of 2,5-hexanedione with amines or diamines using xanthan sulfuric acid as a biosupported and reusable ecofriendly catalyst under solvent-free conditions at room temperature is described. The use of a nontoxic, inexpensive, easily available, and reusable biosupported proton source catalyst under solvent-free conditions makes this protocol practical, environmentally friendly, and economically attractive. © 2011 Springer-Verlag.


A new and efficient method for the preparation of N-substituted pyrroles from one-pot condensation reaction of 2,5-hexandione with amines and diamines in the presence of cellulose sulfuric acid (CSA) as a bio-supported catalyst at room temperature under solvent-free conditions is presented. This new protocol has the advantages of easy availability, stability, reusability and eco-friendly of the catalyst, high to excellent yields, simple experimental and work-up procedure. © 2010 Elsevier Ltd. All rights reserved.


Rahmatpour A.,Research Institute of Petroleum Industry RIPI
Journal of Organometallic Chemistry | Year: 2012

A new and environmentally benign method for the preparation of N-substituted pyrroles from one-pot condensation reaction of 2,5-hexanedione with amines and diamines in the presence of polystyrene-supported gallium trichloride (PS/GaCl 3) as a highly active and reusable heterogeneous Lewis acid catalyst is presented. This new protocol has the advantages of easy availability, stability, reusability and eco-friendly of the catalyst, high to excellent yields, simple experimental and work-up procedure. © 2012 Elsevier B.V. All rights reserved.


Patent
Research Institute of Petroleum Industry RIPI | Date: 2014-11-10

A dispersing-type nanocatalyst for catalytic hydrocracking of heavy oil, a method for preparing the same, and the use thereof in catalytic hydrocracking of heavy oil. The present invention is also directed to reducing the operational temperature of catalytic hydrocracking of heavy crude oil, and also increasing the yield of the process by utilizing a lower concentration of said nanocatalyst.


Patent
Research Institute of Petroleum Industry RIPI | Date: 2011-10-04

The invention relates to a hydrodesulfurization nanocatalyst, use of the hydrodesulfurization nanocatalyst in a hydrodesulfurization process and a process for producing the hydrodesulfurization nanocatalyst. The hydrodesulfurization nanocatalyst can include a nanostructured alumina material, at least one metal selected from group VI B of the periodic table of elements, and at least one metal selected from group VIII B of the periodic table of elements.


Patent
Research Institute of Petroleum Industry RIPI and Tarbiat Modares University | Date: 2014-09-18

The present invention is related to the synthesis of a nano-hybrid catalyst made of carbon nanotubes and metal ferrite materials for the removal of NO_(x )compounds, which are emitted from stationary sources, through an ammonia selective catalytic reduction process. Weight ratios of carbon nanotube (x) to metal ferrite (y) is preferably about (x/y) 0.1 to 10. The present invention is also directed to the synthesis of a nano-hybrid catalyst to improve the efficiency of the conventional NO_(x )reduction process at lower reaction temperatures. By use of the preferred nano-hybrid catalyst, it is possible to locate a selective catalytic reduction (SCR) unit capable of operating at lower temperatures, e.g., below 260 C., and from about 50 C. to about 250 C., after the desulfurizer and the particle removal equipment. With the exhaust gas cleaner, the lifetime of the catalyst can be increased. This nano-hybrid catalyst provides higher NO_(x )removal efficiencies at low temperatures, typically from about 50 C. to about 250 C.


Patent
Research Institute of Petroleum Industry RIPI | Date: 2012-10-24

The invention relates to catalyst systems and processes used for the removal of sulfur compounds from hydrocarbonous gas streams. The invention more specifically relates to catalyst systems based on nano-materials and processes for their production. The invention also relates to catalyst systems and processes used for removal of sulfur materials from gaseous hydrocarbonous streams. The objects of the present invention are achieved by developing new catalyst systems based on nano-structured carbon materials from the group consisting of single wall carbon nano-tubes, double wall carbon nano-tubes, multi wall carbon nano-tubes, nanoporous carbon, carbon nano-fibers, or mixtures thereof as support material and metals and metal compounds selected from Na, V, Mn, Co, Ni, Mo, Cd, W as catalytic substances.


The present invention relates to a hydrodesulfurization (HDS) nanocatalyst, use of the hydrodesulfurization nanocatalyst in a hydrodesulfurization process and a process for the production of a hydrodesulfurization nanocatalyst.


Patent
Research Institute of Petroleum Industry RIPI | Date: 2014-08-06

Light to ultra-light cement compositions with modified rheological properties. The cement composition includes cement, hydrophobic nano-silica, at least one additive and a sufficient amount of water to make a cement slurry with high compressive strength, low porosity, low free water, and low fluid loss with a quick thickening time.


Patent
Research Institute of Petroleum Industry RIPI | Date: 2016-05-25

Light to ultra-light cement compositions with modified rheological properties. The cement composition includes cement, hydrophobic nano-silica, at least one additive and a sufficient amount of water to make a cement slurry with high compressive strength, low porosity, low free water, and low fluid loss with a quick thickening time.

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