15220-85-6

Basic information

• Product Name: TETRAISOBUTYLENE
• Synonyms: TETRAISOBUTYLENE;1-Propene, 2-methyl-, tetramer;2-methyl-1-propentetramer;Isobutene tetramer;Propene, 2-methyl-, tetramer;tetraisobutylene(containsisomer);Tetraisobutene;Isobutylene tetramer
• CAS NO: 15220-85-6
• Molecular Formula: C16H32
• Molecular Weight: 224.43
• Mol File: 15220-85-6.mol
• Article Data: 937

Chemical Properties

• Melting Point: -98 °C
• Boiling Point: 258.3 °C at 760 mmHg
• Flash Point: 110.2 °C
• Appearance: /
• Density: 0.80
• Vapor Pressure: 0.0223mmHg at 25°C
• Refractive Index: 1.431
• CAS DataBase Reference: TETRAISOBUTYLENE(CAS DataBase Reference)
• NIST Chemistry Reference: TETRAISOBUTYLENE(15220-85-6)
• EPA Substance Registry System: TETRAISOBUTYLENE(15220-85-6)

Safety Data

• Hazardous Substances Data: 15220-85-6(Hazardous Substances Data)

Usage

General Description

Tetraisobutylene is a synthetic, hydrocarbon-based chemical compound known for its highly reactive nature and commercial applications. It belongs to the family of branched alkanes and possesses a complex molecular structure. Its primary uses lie in fuel and plastic production due to its combustive properties and high thermal stability. Furthermore, it also finds application in improving the viscosity of lubricating oils. It is typically colorless and possesses a strong odor. As it is highly flammable and reactive, precautions are required during its production, handling, and storage to minimize risks.

InChI:InChI=1/C16H34/c1-13(2)10-15(6,7)12-16(8,9)11-14(3,4)5/h13H,10-12H2,1-9H3

Upstream product

• 1823-52-5 4,4-dimethyloxetan-2-one 
• 563-80-4 3-methyl-butan-2-one 
• 677-22-5 tert-butylmagnesium chloride 
• 91-22-5 quinoline 
• 99-65-0 meta-dinitrobenzene 
• 78-83-1 2-methyl-propan-1-ol 
• 497-19-8 sodium carbonate 
• 106-98-9 1-butylene 
• 13086-84-5 di-tert-butyl phosphite 
• 4158-85-4 2,2,5-trimethyl-1,3-dioxolan-4-one 
• 60-29-7 diethyl ether 
• 917-64-6 methyl magnesium iodide 
• 507-19-7 t-butyl bromide 
• 1605-73-8 t-Butyl radical 

Downstream Products

• 1689-77-6 2,5-di-tert-butylthiophene 
• 75736-66-2 1-(tert-butyl)-4-methylcyclohexane 
• 37642-94-7 3,4-Dihydro-2,2,6-trimethyl-2H-pyran 
• 10408-15-8 6-methylhept-6-en-2-one 
• 15359-96-3 2-tert-butoxytoluene 
• 15515-54-5 2-methoxy-4,6-di-tert-butylphenol 
• 37987-27-2 4-t-butyl-2-methoxyphenol 
• 2909-83-3 2,6-di-tert-butylaniline 
• 1075-38-3 m-t-butyltoluene 
• 52073-65-1 2-(2,4-di-tert-butyl-phenoxy)-ethanol 
• 16647-04-4 6-methyl-3,5-heptadien-2-one 
• 13117-97-0 2-ethyl-6-tert-butyl-aniline 
• 4237-37-0 2-(tert-butyl)-6-chlorophenol 
• 5442-35-3 para-methoxy-2,6-di-tert-butylphenol 

Relevant articles and documents

METHOD FOR DEHYDRATING ALCOHOLS TO OBTAIN OLEFINS, INVOLVING A STEP OF CATALYST SELECTIVATION

The invention relates to a process for dehydrating alcohols to olefins, comprising a reaction step and a catalyst selectivation step.

Insights into the doping effect of rare-earth metal on ZnAl2O4 supported PtSn catalyzed isobutane dehydrogenation

Isobutane dehydrogenation is a vital route for the production of isobutene, an important substance for methyl tert-butyl ether. However, the reaction is typically performed at relatively low pressure and high temperature, resulting in a facilitated coke formation. Here, we used rare-earth metals (Y, La, Ce) as dopants to modify the ZnAl2O4 support and studied their effects on Pt-Sn catalyzed dehydrogenation of isobutane. Combining the experimental and theoretical results, it is demonstrated that while Y and La tend to incorporate into the matrix of ZnAl2O4, separate CeO2 phase could be easily formed on ZnAl2O4 surface, leading to a decrease in both amount and strength of the Lewis acid sites. And for the La-ZnAl2O4, because of the large local deformation, oxygen vacancy can be readily formed, and results in a lot acid sites in the subsurface layer available for reactions. Deactivation rates of the catalysts in isobutane dehydrogenation is found to linearly correlate with the Lewis acid amounts over the modified supports. Compared with the catalysts of Pt-Sn/ZnAl2O4, Pt-Sn/La-ZnAl2O4 and Pt-Sn/Y-ZnAl2O4, Pt-Sn/Ce-ZnAl2O4 exhibits superior catalytic performance due to the low coke contents and high Pt dispersion. These results may provide additional insights on the design and optimization of isobutane dehydrogenation catalysts by tailoring the composition and structure of oxide supports.

Synthesis and catalytic application of nanorod-like FER-type zeolites

Nanosize dimensions have an important impact on zeolite properties and catalytic performance in particular. Herein, we develop a direct synthesis route to obtain a nanosized nanorod-like ferrierite (FER) zeolite with the assistance of ammonium fluoride (NH4F) and employing a conventional structure-directing agent (pyrrolidine). The resultant nanorod-like FER zeolite crystals exhibit a greatly reduced diffusion path along the c-axis. The physicochemical properties of nanorod-like FER and its conventional micronsized plate-like counterpart were analyzed by N2 adsorption-desorption, 27Al, 1H, 29Si MAS NMR, NH3-TPD, and in situ D3-acetonitrile and pyridine adsorption followed by FTIR. The nanorod-like FER zeolite possesses superior characteristics in terms of a larger external area, better accessibility to the acid sites, and a larger number of pore mouths per unit crystal surface than the micron-sized counterpart synthesized without NH4F. The improved properties provide the nanorod-like FER zeolite with high selectivity and low deactivation rates in 1-butene skeletal isomerization. The thermogravimetry analysis (TGA) of the coke amounts revealed a better capability of coke tolerance of the nanorod-like FER zeolite. The in situ ultraviolet-visible (UV/Vis) and Fourier transform infrared spectroscopy (FTIR) spectroscopy investigations of the organic intermediates formed on FER zeolite catalysts during the catalytic reaction further verified the enhanced catalytic activity and stability of the nanorod-like FER zeolite.