公开(公告)号：US06991678B2

公开(公告)日：2006-01-31

申请号：US10449716

申请日：2003-05-30

Applicant: Mohan Keraba Dongare ,  Pratap Tukaram Patil ,  Kusum Madhukar Malshe

Inventor： Mohan Keraba Dongare ,  Pratap Tukaram Patil ,  Kusum Madhukar Malshe

IPC: C01B37/00 ,  C01G23/00

CPC classification number: C01B37/005

Abstract: A process for the preparation of crystalline microporous titanium silicates using ethylsilicate-40 and titanium peroxide as silicon and titanium sources respectively is described. The process permits a significant decrease in the production cost of titanium silicate containing higher amount of titanium (Si/Ti=20) because of cheaper raw materials as well as reduction in the quantity of tetarpropylammonium hydroxide (TPAOH) template (SiO2:TPAOH=1:0.06–0.1) required for preparation. The material obtained by the present invention is useful as an active catalyst in the reactions such as oxidation of hydrocarbons, alcohols, sulphides, and thioethers.

Abstract translation: 描述了分别使用硅酸乙酯40和二氧化钛作为硅源和钛源来制备结晶微孔硅酸钛的方法。 由于原料价格便宜以及四丙基氢氧化铵（TPAOH）模板（SiO 2）的量的减少，该方法可显着降低含钛量较高的硅酸钛（Si / Ti = 20）的生产成本 TPAOH = 1：0.06-0.1）。 通过本发明获得的材料可用作反应中的活性催化剂，例如烃，醇，硫化物和硫醚的氧化。

公开(公告)号：US06791000B2

公开(公告)日：2004-09-14

申请号：US10449718

申请日：2003-05-30

Applicant: Mohan Keraba Dongare ,  Pratap Tukaram Patil ,  Kusum Madhukar Malshe

Inventor： Mohan Keraba Dongare ,  Pratap Tukaram Patil ,  Kusum Madhukar Malshe

IPC: C07C20506

CPC classification number: B01J23/002 ,  B01J23/28 ,  B01J23/88 ,  B01J2523/00 ,  C07C201/08 ,  B01J2523/41 ,  B01J2523/68 ,  B01J2523/842 ,  C07C205/06

Abstract: Nitration of benzene is an important reaction for the production of nitro benzene, which is an important intermediate in chemical and pharmaceutical industries. Conventionally nitrobenzene is produced by liquid phase reactions employing mixed acids. A sulfuric acid/nitric acid mixture is the most commonly used nitrating agent. Generation of large amount dilute sulfuric acid, organic wastes and products of their neutralization makes the benzene nitration a environmentally harmful process. The present process enables the preparation of nitrobenzene by vapor phase nitration of benzene over solid acid catalyst, MoO3/SiO2 using nitric acid. This process is a clean and environment friendly process without use of sulphuric acid.

公开(公告)号：US08957250B2

公开(公告)日：2015-02-17

申请号：US14115064

申请日：2012-05-16

Applicant: Mohan Keraba Dongare ,  Shubhangi Bhalchandra Umbarker ,  Samadhan Tanaji Lomate

Inventor： Mohan Keraba Dongare ,  Shubhangi Bhalchandra Umbarker ,  Samadhan Tanaji Lomate

IPC: C07B35/00 ,  C07C51/377

CPC classification number: C07C51/377 ,  C07C57/04

Abstract: Disclosed herein is an improved process for the catalytic dehydration of lactic acid to acrylic acid. More particularly, the present invention discloses catalytic dehydration of lactic acid to acrylic acid with high selectivity and yield for acrylic acid using calcium phosphate (CP) catalyst with varying Ca/P ratio optionally modified with 5 wt % sodium.

Abstract translation: 本文公开了将乳酸催化脱水成丙烯酸的改进方法。 更具体地说，本发明公开了使用磷酸钙（CP）催化剂，以5wt％的钠任选地改变的Ca / P比值变化，以高选择性和高产率将乳酸催化脱水成丙烯酸。

公开(公告)号：US20130197245A1

公开(公告)日：2013-08-01

申请号：US13827809

申请日：2013-03-14

Applicant: Shubhangi Bhalchandra Umbarkar ,  Mohan Keraba Dongare ,  Ankush Biradar ,  Vaibhav Ravindrakumar Acham

Inventor： Shubhangi Bhalchandra Umbarkar ,  Mohan Keraba Dongare ,  Ankush Biradar ,  Vaibhav Ravindrakumar Acham

IPC: B01J31/22 ,  C07C29/48 ,  C07C315/02 ,  C07C45/29 ,  C07C51/285 ,  C07C201/00 ,  C07D301/12 ,  C07C45/28

CPC classification number: B01J31/2295 ,  C07C29/48 ,  C07C45/28 ,  C07C45/294 ,  C07C51/285 ,  C07C201/00 ,  C07C315/02 ,  C07D301/12 ,  C07F17/00

Abstract: An organometallic molybdenum acetylide dioxo complex of formula (η5-C5H5)MoO2(—Cs≡CPh) and provides a simple, short, efficient process for the synthesis of organometallic molybdenum dioxo complex which is used as catalyst for a number of oxidation reactions.

Abstract translation: 式（eta5-C5H5）MoO2（-Cs = CPh）的有机金属钼乙炔二氧化物络合物，提供用于合成有机金属钼二氧化物络合物的简单，短期，有效的方法，其用作许多氧化反应的催化剂。

公开(公告)号：US20140155653A1

公开(公告)日：2014-06-05

申请号：US14115064

申请日：2012-05-16

Applicant: Mohan Keraba Dongare ,  Shubhangi Bhalchandra Umbarker ,  Samadhan Tanaji Lomate

Inventor： Mohan Keraba Dongare ,  Shubhangi Bhalchandra Umbarker ,  Samadhan Tanaji Lomate

IPC: C07C51/377

CPC classification number: C07C51/377 ,  C07C57/04

Abstract: Disclosed herein is an improved process for the catalytic dehydration of lactic acid to acrylic acid. More particularly, the present invention discloses catalytic dehydration of lactic acid to acrylic acid with high selectivity and yield for acrylic acid using calcium phosphate (CP) catalyst with varying Ca/P ratio optionally modified with 5 wt % sodium.

Abstract translation: 本文公开了将乳酸催化脱水成丙烯酸的改进方法。 更具体地说，本发明公开了使用磷酸钙（CP）催化剂，以5wt％的钠任选地改变的Ca / P比值变化，以高选择性和高产率将乳酸催化脱水成丙烯酸。

公开(公告)号：US06825388B2

公开(公告)日：2004-11-30

申请号：US10396102

申请日：2003-03-25

Applicant: Mohan Keraba Dongare ,  Pratap Tukaram Patil ,  Kusum Madhukar Malshe

Inventor： Mohan Keraba Dongare ,  Pratap Tukaram Patil ,  Kusum Madhukar Malshe

IPC: C07C20500

CPC classification number: C07C201/08 ,  C07C205/06

Abstract: The present invention relates to the process for vapor phase nitration of o-xylene using dilute nitric acid over H-beta zeolite. More particularly it relates to the selective formation of 4-nitro o-xylene by vapor phase nitration of 0-xylene using dilute nitric acid over commercially available H-beta catalyst. The continuous process of nitration of o-xylene comprises of a reaction carried out in a downflow reactor using o-xylene and dilute nitric acid with mole ratio of 2:1 to 1:2 and WHSV of 0.1-0.5 at 100-250° C. at atmospheric pressure.