US 12,312,290 B2
Isobutyl benzene and a process for synthesis of isobutyl benzene by using a catalyst
Sanjay Pandurag Kamble, Pune (IN); Chandrashekhar Vasant Rode, Pune (IN); Nandakumar Velayudhan Pillai, Aluva Ernakulam (IN); Karthick Ramalingam, Abatharanapuram Vadalur (IN); and Rohit Ravi Shetty, Kolhapur (IN)
Assigned to MANGALORE REFINERY & PETROCHEMICALS LTD., Mangalore (IN)
Appl. No. 17/614,404
Filed by MANGALORE REFINERY & PETROCHEMICALS LTD., Mangalore (IN)
PCT Filed May 28, 2020, PCT No. PCT/IB2020/055067
§ 371(c)(1), (2) Date Nov. 26, 2021,
PCT Pub. No. WO2020/240460, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 201941021772 (IN), filed on May 31, 2019.
Prior Publication US 2022/0227686 A1, Jul. 21, 2022
Int. Cl. C07C 2/72 (2006.01); B01J 23/02 (2006.01); B01J 23/04 (2006.01); B01J 35/40 (2024.01); B01J 37/00 (2006.01)
CPC C07C 2/72 (2013.01) [B01J 23/02 (2013.01); B01J 23/04 (2013.01); B01J 35/40 (2024.01); B01J 37/0036 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A process for the synthesis of isobutyl benzene, said process comprising the following steps:
a) preparing a catalyst by reacting active metal and support, in-situ, under vacuum at a temperature in a range of 200° C. to 400° C. in a reactor, wherein said catalyst comprises an active metal doped on a support, wherein said support is a metal carbonate support which is at least one selected from the group consisting of potassium carbonate (K2CO3), sodium carbonate (Na2CO3), cesium carbonate (CS2CO3), and rubidium carbonate (Rb2CO3), and wherein said support has a particle size in a range of 15 nm to 30 nm;
b) cooling said reactor at a temperature in a range of 25° C. to 40° C. and introducing a predetermined amount of toluene in said reactor;
c) charging a predetermined amount of propylene gas in said reactor by maintaining a temperature in a range of 25° C. to 40° C. to obtain a propylene toluene mixture; and
d) heating said mixture at a temperature in a range of 130° C. to 190° C., to obtain isobutyl benzene.