ChemicalBook CAS DataBase List 1,4-DIISOPROPYLBENZENE

1,4-DIISOPROPYLBENZENE synthesis

12synthesis methods

Product Name:1,4-DIISOPROPYLBENZENE
CAS Number:100-18-5
Molecular formula:C12H18
Molecular Weight:162.27

99-62-7
128 suppliers
$9.00/1g

577-55-9 Synthesis

577-55-9
7 suppliers
inquiry

98-82-8
256 suppliers
$9.00/5ml

100-18-5
140 suppliers
$9.00/5g

717-74-8 Synthesis

717-74-8
275 suppliers
$15.00/25g

948-32-3
9 suppliers
inquiry

Yield:98-82-8 1% ，100-18-5 3.3% ，717-74-8 1.2% ，948-32-3 0.4%

Reaction Conditions:

at 199.99 - 234.99; under 36961.4 Torr;Product distribution / selectivity;

Steps:

1
In this experiment, p-DIPB was synthesized by utilizing the technique of this invention. In the procedure used, 142 g (195 cc) of silica alumina catalyst, consisting of 90% silica and 10% alumina, was loaded into a 24 long 1.0OD (0.83 ID) 316 stainless steel tube. The catalyst bed was positioned for optimal heating within the reactor by supporting and retaining the bed on inert packing. The reactor was heated externally with hot-oil spiral-wound heat tracing (0.25 OD tubing). A m-DIPB stream (consisting of 98.5% m-DIPB, 0.6% o-DIPB, 0.2% p-DIPB, with the balance being m-, o-, and p-ethylcumenes) was fed to the reactor at a rate of 4.0 g/minute, resulting in a space velocity of 1.7 WHSV's. Pressure was maintained at 700 psig by a back pressure controller. The reactor was heated to 392° F. and the contents were allowed to come to steady state. Sample No.1 was collected and analyzed by GC. The temperature was then raised to 419° F. and the contents were allowed to come to steady state. Sample No.2 was collected and analyzed by GC. The temperature was then raised to 455° F. and the contents were allowed to come to steady state. Sample No.3 was collected and analyzed by GC. The results are reported in the table below. In the catalyst loading procedure used, a stainless steel screen was positioned at the bottom of the reactor. Then about -¼ of glass wool was packed next on top of the screen, followed by the catalyst. Finally, about 10 cc of glass chips were loaded on top of the catalyst bed, followed by another plug of glass wool. The feed stream was fed with vertical downflow and was operated liquid-full.

References:

Bennett, Ronald Quentin;Goodwin, Jeffrey Alan;Rich, Jonathan David US2005/75522, 2005, A1 Location in patent:Page/Page column 4-6

98-82-8
256 suppliers
$9.00/5ml

187737-37-7 Synthesis