The Origin of the Positive Effect of Cadmium Acetate on the Action of Supported Palladium Catalysts

Adam, Steffi; Bauer, Andréa Carla; Timpe, Olaf; Wild, Ute; Mestl, Gerhard; Bensch, Wolfgang; Schlögl, Robert

doi:10.1002/(sici)1521-3765(19980807)4:8<1458::aid-chem1458>3.0.co;2-1

Cited by 20 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure S2, the N 1s and the Cd 3d core levels of 5j are depicted. The measured binding energy of the Cd 3d 5/2 core level (406.0 eV) is indeed close to the binding energy measured for related Cd 2+ complexes (405.7 eV) . An additional contribution of nitrogen in NO 2 groups would also appear at 406 eV binding energy (see Figure ).…”

Section: Resultssupporting

confidence: 81%

Functionalization of Single-Walled Carbon Nanotubes with (R-)Oxycarbonyl Nitrenes

et al. 2003

View full text Add to dashboard Cite

Sidewall functionalization of single-walled carbon nanotubes (SWCNTs) via the addition of (R-)oxycarbonyl nitrenes allows for the covalent binding of a variety of different groups such as alkyl chains, aromatic groups, dendrimers, crown ethers, and oligoethylene glycol units. Such additions lead to a considerable increase in the solubility in organic solvents such as 1,1,2,2-tetrachloroethane (TCE), dimethyl sulfoxide (DMSO), and 1,2-dichlorobenzene (ODCB). The highest solubilities of 1.2 mg/mL were found for SWCNT adducts with nitrenes containing crown ether of oligoethylene glycol moieties in DMSO and TCE, respectively. The presence of chelating donor groups within the addends allowed for the complexation of Cu(2+) and Cd(2+). Atomic force microscopy (AFM) and transmission electron microscopy (TEM) revealed that the functionalized tubes form thin bundles with typical diameters of 10 nm. The presence of thin bundles in solution is supported by (1)H NMR spectroscopy. The elemental composition of the functionalized SWCNT was determined by X-ray photoelectron spectroscopy (XPS). The use of Raman and electron absorption spectroscopy (UV/Vis-nIR) showed that the electronic properties of the SWCNTs are mostly retained after functionalization, indicating a low degree of addition within this series of SWCNT derivatives.

show abstract

Section: Resultssupporting

confidence: 81%

Functionalization of Single-Walled Carbon Nanotubes with (R-)Oxycarbonyl Nitrenes

et al. 2003

View full text Add to dashboard Cite

show abstract

“…Because the dehydrogenation is endothermic K p increases with temperature. Bond et al − have shown that the value of x does not significantly affect the rate. A similar behavior was found in this work and therefore a constant value for each paraffinic GOI was set for x .…”

Section: Rate Expressions For Reactions On Metal Sitesmentioning

confidence: 99%

Fundamental Kinetic Modeling of Catalytic Reforming

Sotelo-Boyás

Froment

2008

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

A fundamental kinetic model for the catalytic reforming process has been developed. The complex network of elementary steps and molecular reactions occurring in catalytic reforming was generated through a computer algorithm characterizing the various species by means of vectors and Boolean relation matrices. The algorithm is based on the fundamental chemistry occurring on both acid and metal sites of a Pt-Sn/Al 2 O 3 catalyst. The number of rate coefficients for the transformations occurring on the metal sites was reduced by relating them to the nature of the involved carbon atoms. The single event concept was applied in the development of rate expressions for the elementary steps on the acid sites. This approach allows obtaining rate coefficients that are independent of the feedstock, owing to their fundamental chemical nature. The Levenberg-Marquardt algorithm was used to estimate the rate coefficients. The estimation was based on data reported from a previous naphtha reforming study in a fixed bed reactor with Pt-Sn/Al 2 O 3 as a catalyst. The agreement between the experimental and estimated yields is excellent. The statistical tests were also satisfied. The kinetic model was used in pseudo-homogeneous and heterogeneous reactor models simulating an industrial three-bed adiabatic catalytic reformer with centripetal radial flow.

show abstract

“…However, synthesis and processing of such parent compounds is rather laborious. Pd-based heterobimetallic carboxylate complexes could be viable alternative precatalysts; however, until recently, there were only two well-defined examples for this type of compound -Pd 2 Cd 2 (l-OO CMe) 8 AE(HOOCMe) 2 [3] and PdTl(l-OOCMe) 4 (OO CMe) [4].…”

Section: Introductionmentioning

confidence: 99%

An easy way to Pd–Zn nanoalloy with defined composition from a heterobimetallic Pd(μ–OOCMe)4Zn(OH2) complex as evidenced by XAFS and XRD

et al. 2006

View full text Add to dashboard Cite

show abstract

The Origin of the Positive Effect of Cadmium Acetate on the Action of Supported Palladium Catalysts

Abstract: The complex chemistry of Pd(OAc) 2 and Cd(OAc) 2 in the solid state and in acetic acid solution has been studied. Triclinic crystals, space group P1

Cited by 20 publications

References 11 publications

Functionalization of Single-Walled Carbon Nanotubes with (R-)Oxycarbonyl Nitrenes

Functionalization of Single-Walled Carbon Nanotubes with (R-)Oxycarbonyl Nitrenes

Fundamental Kinetic Modeling of Catalytic Reforming

An easy way to Pd–Zn nanoalloy with defined composition from a heterobimetallic Pd(μ–OOCMe)4Zn(OH2) complex as evidenced by XAFS and XRD

Contact Info

Product

Resources

About