Indian Oil Corporation Limited

Department of Biotechnology

Biswajit Basu

Gurpreet Singh Kapur

Ravinder Kumar Malhotra

Naresh Kumar

Gurmeet Singh

Sukhdeep Kaur

Bhasker Bantu

Shashi Kant

Shashikant

Suresh Kumar Puri

Deepak Kumar Tuli

Akhilesh Kumar Bhatnagar

Ravi Prakash Gupta

Anurag Ateet Gupta

Jarmo Lindroos

Ravindra Kumar

Rashmi Rani

Alok Satlewal

Arvind Pratap Singh

Ruchi Agrawal

Mohasin Momin

Som Prakash Srivastava

Svein Nenseth

Anshu Shanker Mathur

Arunagiri Samy

The present invention relates to an additive or additive composition for improved production of fermentable sugars from lignocellulosic biomass during enzymatic hydrolysis. More particularly, the present invention discloses petrochemical waste as an additive or an additive composition containing one or more ethylene glycol oligomers and one or more metal ions which are useful for improved production of fermentable sugars from lignocellulosic biomass during enzymatic hydrolysis.

Method for improved production of fermentable sugars from lignocellulosic biomass using additive and enzyme

The present invention provides a solid organomagnesium precursor having formula {Mg(OR')X}.a{MgX}.b{Mg(OR&#x2032;)}.c{R&#x2032;OH}, wherein R&#x2032; is selected from a hydrocarbon group, X is selected from a halide group, and a:b:c is in range of 0.01-0.5:0.01-0.5:0.01-5 and process for preparing the same, said process comprising contacting a magnesium source with a solvating agent, an organohalide and an alcohol to obtain the solid organomagnesium precursor. The present invention also provides a process for preparing a catalyst system using the organomagnesium precursor and its use thereof for polymerization of olefins.

Organometallic compound in solid form, process for preparing the same and use thereof

The present invention provides a liquid organomagnesium precursor having formula {Mg(OR')X}.a{MgX}.b{Mg(OR&#x2032;)}.c{R&#x2032;OH}, wherein R&#x2032; is selected from a hydrocarbon group, X is selected from a halide group, and a:b:c is in range of 0.1-99.8:0.1-99.8:0.1-99.8, and a process for preparing the same. The said process comprises contacting a magnesium source with an organohalide and alcohol in a solvent to form the liquid organomagnesium precursor. The present invention also provides a catalyst system using the organomagnesium precursor and its use thereof for polymerization of olefins. An illustrative example of the claimed process to make the organomagnesium precursor is: At 25&#xb0; C., magnesium (powder or turnings) is added to organohalide, followed by alcohol in toluene. After heating to 90&#xb0; C. and keeping there for 6 h the solution became viscous.

Precursor for catalyst, process for preparing the same and its use thereof

The present invention describes a process for preparing catalyst for the polymerization of ethylene consisting essentially of the steps of (i) contacting a magnesium based precursor with a solvent; and (ii) then contacting the magnesium based precursor in the solvent with a transition metal compound to obtain the catalyst, wherein step (ii) is single contact step. The present invention also relates to a process for preparation of a catalyst system and a process of polymerizing and/or copolymerizing of ethylene to obtain a polyethylene using the catalyst.

Catalyst for olefin polymerization and polymerization thereof

The present invention provides a process for preparation of a solid titanium catalyst component for use as pro-catalyst for a Ziegler-Natta catalyst system. The solid titanium catalyst component comprises a combination of 15 to 20 wt % of a magnesium moiety, 1.0 to 6.0 wt % of a titanium moiety and 5.0 to 20 wt % of an internal donor, said solid titanium catalyst component has an average particle size in the range of 1 to 100 &#x3bc;m, characterized by a three point particle size distribution of D10 in the range of 1 to 10 &#x3bc;m; D50 in the range of to 25 &#x3bc;m and D90 in the range of 15 to 50 &#x3bc;m. The present invention also provides a 15 Ziegler-Natta catalyst system comprising the solid titanium catalyst component and the method of polymerizing and/or copolymerizing olefins by using the Ziegler-Natta catalyst system.

Catalyst for polymerization of olefins and process thereof

The present invention describes a process for controlling particle size of a catalyst composition. The process comprising the steps of contacting an internal donor with an organomagnesium precursor solution to form an intermediate solution and treating the intermediate solution with a transition metal compound to form a catalyst composition, wherein particle size of the catalyst composition is controlled by controlling a contact time of the internal donor with the precursor solution during formation of the intermediate solution.

Particle size distribution control through internal donor in Ziegler-Natta catalyst

The present invention provides a solid organomagnesium precursor having formula {Mg(OR')X}.a{MgX}.b{Mg(OR&#x2032;)}.c{R&#x2032;OH}, wherein R&#x2032; is selected from a hydrocarbon group, X is selected from a halide group, and a:b:c is in range of 0.01-0.5:0.01-0.5:0.01-5 and process for preparing the same, said process comprising contacting a magnesium source with a solvating agent, an organohalide and an alcohol to obtain the solid organomagnesium precursor. The present invention also provides a process for preparing a catalyst system using the organomagnesium precursor and its use thereof for polymerization of olefins. The organomagnesium precursor is prepared as follows: At 0&#xb0; C., magnesium in diethyl ether is reacted with the organohalide. After all magnesium has reacted, the calculated amount of alcohol was added and after the completion of addition, the ether was evaporated and a solid compound obtained.

A process for preparing benzene containing less than 1 ppm (wt) dioxane from an aromatic stream containing benzene which is contaminated with dioxane, the process including providing an aromatic stream containing benzene which is contaminated with dioxane; subjecting the aromatic stream to liquid phase adsorption by contacting an adsorbent contained in at least one column, which adsorbent comprises at least one substance selected from the group consisting of molecular sieves and clay; and recovering benzene containing less than 1 ppm (wt) dioxane. Preferably, the liquid phase adsorption is carried out at a pressure ranging from atmospheric pressure to 20 kg/cm.sup.2 and at a temperature ranging from ambient temperature to 50.degree. C. Preferably, the molecular sieves have a pore size of 10 .ANG.. The process may further include regenerating the adsorbent by passing a flow of nitrogen gas through the adsorbent at a temperature ranging from 200 to 300.degree. C. Alternatively, the process may further include regenerating the adsorbent by heating the adsorbent at a temperature ranging from 200 to 300.degree. C. for a period of time which is effective to regenerate the adsorbent.

Process for the preparation of aromatic solvent from a dioxane

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Faridabad, India

Biswajit Basu