6157-20-6

Basic information

• Product Name: 2-BUTENE-D8
• Synonyms: 2-BUTENE-D8;2-Butene-D8 (gas)
• CAS NO: 6157-20-6
• Molecular Formula: C₄H₈
• Molecular Weight: 64.16
• Mol File: 6157-20-6.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2-BUTENE-D8(CAS DataBase Reference)
• NIST Chemistry Reference: 2-BUTENE-D8(6157-20-6)
• EPA Substance Registry System: 2-BUTENE-D8(6157-20-6)

Safety Data

• Hazardous Substances Data: 6157-20-6(Hazardous Substances Data)

Usage

General Description

2-BUTENE-D8 is a deuterated form of 2-butene, a colorless and flammable gas commonly used in the production of chemicals such as butanol, butyl rubber, and polyethylene. The "D8" designation indicates that the hydrogen atoms in the molecule have been replaced with deuterium, a stable isotope of hydrogen with a higher mass. This labeling allows researchers to track the movement and transformation of the molecule in chemical reactions using techniques such as nuclear magnetic resonance (NMR) spectroscopy. 2-BUTENE-D8 is also used in the field of organic chemistry as a reagent and as a starting material in the synthesis of various organic compounds.

Upstream product

• 1517-52-8 hexadeuteriopropene 

Relevant articles and documents

Reaction Mechanism and Kinetics of Olefin Metathesis by Supported ReOx/Al2O3 Catalysts

The self-metathesis of propylene by heterogeneous supported ReOx/Al2O3 catalysts was investigated with in situ Raman spectroscopy, isotopic switch (D-C3= → H-C3=), temperature-programmed surface reaction (TPSR) spectroscopy, and steady-state kinetic studies. The in situ Raman studies showed that two distinct surface ReO4 sites are present on alumina and that the olefins preferentially interact with surface ReO4 sites anchored at acidic surface sites of alumina (olefin adsorption: C4= > C3= > C2=). The isotopic switch experiments demonstrate that surface Re?CH3 and Re?CHCH3 are present during propylene metathesis, with Re? representing activated surface rhenia sites. At low temperatures (3=][Re?]2. At high temperatures (>100 °C), the rate-determining step is the recombination of two surface propylene molecules (rate ≈ [C3=]2[Re?]). To a lesser extent, the recombination of surface Re?CH3 and Re?CHCH3 intermediates also contributes to self-metathesis of propylene at elevated reaction temperatures.