XAFCA: a new XAFS beamline for catalysis research
Yonghua Du1, Yi Zhu1, Shibo Xi1
1Institute of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, Jurong Island, 627833, Singapore.
Journal of Synchrotron Radiation
|May 2, 2015
Summary
A new X-ray absorption fine-structure (XAFS) spectroscopy beamline, XAFCA, enables advanced catalysis research. It operates across a wide energy range and accommodates diverse experimental conditions, including hazardous gases.
Area of Science:
- Catalysis Research
- Materials Science
- Spectroscopy
Background:
- Fundamental and applied catalysis research requires advanced spectroscopic tools.
- Existing infrastructure may have limitations in energy range, temperature, or pressure capabilities for certain catalytic studies.
Purpose of the Study:
- To introduce and detail the capabilities of the newly constructed XAFCA beamline.
- To highlight its suitability for a broad spectrum of catalysis research.
Main Methods:
- Construction of the XAFCA beamline utilizing Si (111) and KTiOPO4 [KTP (011)] monochromator crystals.
- Operation across a photon energy range of 1.2 to 12.8 keV.
- Capability for experiments at temperatures from 4.2 to 1000 K and pressures up to 30 bar.
Main Results:
- The XAFCA beamline covers a broad photon energy spectrum essential for various X-ray absorption fine-structure (XAFS) studies.
- The beamline supports a wide range of experimental conditions, including high temperatures and pressures.
- Incorporation of a safety system permits the use of hazardous gases like H2 and CO, crucial for many catalytic reactions.
Conclusions:
- The XAFCA beamline is a versatile and robust platform for cutting-edge catalysis research.
- Its comprehensive capabilities significantly enhance the potential for fundamental and applied investigations in catalysis.
Related Concept Videos
01:10X-ray Diffraction of Biological Samples
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.