Sum Frequency Generation and Polarization—Modulation Infrared Reflection Absorption Spectroscopy of Functioning Model Catalysts from Ultrahigh Vacuum to Ambient Pressure

ChemInform ◽  
2007 ◽  
Vol 38 (28) ◽  
Author(s):  
Guenther Rupprechter
Keyword(s):  
Absorption Spectroscopy ◽  
Ambient Pressure ◽  
Ultrahigh Vacuum ◽  
Sum Frequency Generation ◽  
Model Catalysts ◽  
Polarization Modulation ◽  
Sum Frequency ◽  
Infrared Reflection Absorption Spectroscopy ◽  
Infrared Reflection ◽  
Frequency Generation

A Newly Designed Infrared Reflection Absorption Spectroscopy System for In Situ Characterization from Ultrahigh Vacuum to Ambient Pressure

2017 ◽  
Vol 72 (1) ◽  
pp. 122-128 ◽  
Author(s):  
Yunshu Du ◽  
Ling Li ◽  
Xuan Wang ◽  
Hengshan Qiu
Keyword(s):  
High Pressure ◽  
Absorption Spectroscopy ◽  
Ambient Pressure ◽  
Co Adsorption ◽  
Ultrahigh Vacuum ◽  
Variable Pressure ◽  
Polarization Modulation ◽  
Infrared Reflection Absorption Spectroscopy ◽  
Infrared Reflection

We present a novel ultrahigh vacuum (UHV) compatible polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) system that is designed for in situ surface spectroscopic characterization on a transferable single crystalline sample. The innovative design of manipulator rod and high-pressure cell (HPC) ensures free movement of the sample between the preparation chamber and the HPC, and perfect separation of them during high pressure experiments. The pressure in the HPC can be varied from UHV (10−9 mbar) to ambient pressure (1000 mbar) while keeping the preparation chamber under UHV conditions. The design of the transferable sample holder and receiving stage allows precise temperature measurement and allows convenient sample changing. In situ IRRAS measurements under variable pressure and temperature can be conducted either in the conventional mode or with polarization modulation. Other surface characterization methods can also use the preparation chamber; thus, the system is endowed with the capability for systematic investigations of surface catalytic reactions. A case study of CO adsorption and oxidation on Pt(111) demonstrates the performance of the system.

Sum frequency generation vibrational spectroscopy at solid–gas interfaces: CO adsorption on Pd model catalysts at ambient pressure

2002 ◽  
Vol 502-503 ◽  
pp. 109-122 ◽  
Author(s):  
Günther Rupprechter ◽  
Holger Unterhalt ◽  
Matthias Morkel ◽  
Paolo Galletto ◽  
Linjie Hu ◽  
...  
Keyword(s):  
Vibrational Spectroscopy ◽  
Ambient Pressure ◽  
Co Adsorption ◽  
Sum Frequency Generation ◽  
Model Catalysts ◽  
Sum Frequency ◽  
Frequency Generation

scholarly journals Sum frequency generation spectroscopy in heterogeneous model catalysis: a minireview of CO-related processes

2021 ◽  
Author(s):  
Xia Li ◽  
Günther Rupprechter
Keyword(s):  
Surface Science ◽  
Science Studies ◽  
Ambient Pressure ◽  
Sum Frequency Generation ◽  
Heterogeneous Model ◽  
Model Catalysis ◽  
Sum Frequency ◽  
Pressure Surface ◽  
Sum Frequency Generation Spectroscopy ◽  
Frequency Generation

Sum frequency generation (SFG) vibrational spectroscopy is applied to ambient pressure surface science studies of adsorption and catalytic reactions at solid/gas interfaces.

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