Nickel nanoparticles highly dispersed with an ordered distribution in MCM-41 matrix as an efficient catalyst for hydrodechlorination of chlorobenzene

Wu, Naijin; Zhang, Wen; Li, Baoshan; Han, Chunying

doi:10.1016/j.micromeso.2013.11.017

Cited by 27 publications

(13 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 3 is the XPS spectra of samples Cry-Ni and Cry-Co, and the insets are the de-convoluted Ni 2p3/2 and Co 2p3/2 spectra. As shown in Figure 3a, there is a predominant peak centered at 855.95 eV 18 , indicating the strong interaction between nickel atom and the silica base, suggesting the nickel atoms incorporating into the silica framework 19 , which corroborates the previous results; a peak centered at 781.55 eV existing in the Figure 3b, which is the characteristic peak of Co 2p2/3 20 , indicating cobalt atoms also incorporating into the silica framework. Figure 4 illustrates the XANES spectra of Cry-Ms.…”

Section: Resultssupporting

confidence: 88%

Synthesis, Characterization and Catalytic Performance of Well-ordered Crystalline Heteroatom Mesoporous MCM-41

Qin¹,

Li²

2016

Preprint

Self Cite

View full text Add to dashboard Cite

Abstract：The mesoporous heteroatom molecular sieve MCM-41 bulk crystals with the crystalline phase were synthesized via a one-step hydrothermal method using an ionic complex as template. The ionic complex template was formed by interaction between cetyltrimethylammonium ions and metal complex ion [M (EDTA)] 2-(M=Co or Ni ). The materials were characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, N2 adsorption-desorption isotherms, and X-ray absorption fine structure spectroscopy. The results showed that the materials possess a highly ordered mesoporous structure with the crystalline phase and possess high uniform ordered arrangement channels. The structure is in the vertical cross directions with a crystalline size of about 12 µ m and high specific surface areas. The metal atoms were incorporated into the zeolite frameworks in the form of octahedral coordinate and have a uniform distribution in the materials. The amount of metal complexes formed by metal ion and EDTA is an essential factor for the formation of the vertical cross structure. Comparing to Si-MCM-41, the samples exhibited better conversion, higher selectivity for cumene cracking.

show abstract

Section: Resultssupporting

confidence: 88%

Synthesis, Characterization and Catalytic Performance of Well-ordered Crystalline Heteroatom Mesoporous MCM-41

Qin¹,

Li²

2016

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Figure 3 shows the XPS spectra of Cry-Ni and Cry-Co samples, and the insets are the de-convoluted Ni 2p3/2 and Co 2p3/2 spectra. As shown in Figure 3a, there is a predominant peak centered at 855.95 eV [18], indicating the strong interaction between nickel atom and the silica base, suggesting the nickel atoms incorporating into the silica framework [19], which corroborates the previous results; a peak centered at 781.55 eV in the Figure 3b is the characteristic peak of Co 2p2/3 [20], indicating that cobalt atoms were also incorporating into the silica framework. The handbook of X-ray photoelectron spectroscopy (XPS) showed the binding energy of NiO and CoO.…”

Section: Resultssupporting

confidence: 87%

Synthesis, Characterization and Catalytic Performance of Well-Ordered Crystalline Heteroatom Mesoporous MCM-41

Qin

Yan

2017

Crystals

Self Cite

View full text Add to dashboard Cite

Abstract:Mesoporous heteroatom molecular sieve MCM-41 bulk crystals with the crystalline phase were synthesized via a one-step hydrothermal method using an ionic complex as template. The ionic complex template was formed by interaction between cetyltrimethylammonium ions and metal complex ion [M(EDTA)] 2− (M = Co or Ni)]. The materials were characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, N 2 adsorption-desorption isotherms, and X-ray absorption fine structure spectroscopy. The results showed that the materials possess a highly-ordered mesoporous structure with a crystalline phase and possess highly uniform ordered arrangement channels. The structure is in the vertical cross directions with a crystalline size of about 12 µm and high specific surface areas. The metal atoms were incorporated into the zeolite frameworks in the form of octahedral coordinate and have a uniform distribution in the materials. The amount of metal complexes formed by metal ion and EDTA is an essential factor for the formation of the vertical cross structure. Compared to Si-MCM-41, the samples exhibited better conversion and higher selectivity for cumene cracking.

show abstract

“…As seen in Fig. 1(b), the adsorption-desorption curve was type IV, which indicated the as-prepared MCM-41 was mesoporous nature [22]. Furthermore, the pore size distribution of the obtained MCM-41 with high-specific surface area of 744.27 m 2 /g was mainly in the range of 2-4 nm, which was further confirmed that MCM-41 possessed mesoporous structure.…”

Section: Characterization Of Mcm-41 and Msnzvimentioning

confidence: 54%

Facile preparation of mesoporous silica/nano zero-valent iron composite for Pb(II) removal from aqueous solution

Lü

Qiao

Wang

et al. 2016

Desalination and Water Treatment

View full text Add to dashboard Cite

2015): Facile preparation of mesoporous silica/nano zero-valent iron composite for Pb(II) removal from aqueous solution, Desalination and Water Treatment, A B S T R A C TNano zero-valent iron (NZVI) particles were prone to forming aggregates owing to their intrinsic magnetism and van der Waals force. In this work, a composite material containing mesoporous silica MCM-41 and NZVI was prepared to avoid the problem of NZVI aggregation. The structures and morphologies of the as-prepared composite were confirmed using X-ray diffraction, Fourier transform infrared spectrometry, transmission electron microscopy, N 2 adsorption-desorption, and X-ray photoelectron spectroscopy techniques. It was found that NZVI particles were well dispersed in the composite, although the size of NZVI particle was larger than that of bare NZVI. Moreover, the composite was used as adsorbent for removing Pb(II) from aqueous solution at room temperature. The effects of contact time, initial solution pH, and adsorbent dosage on the removal efficiency of Pb(II) were studied using batch adsorption experiments. The results indicated the composite exhibited enhanced adsorption properties, with the maximum adsorption capacity of 416.17 mg/g for Pb(II) removal from aqueous solution. In addition, the adsorption isotherms and adsorption kinetics were also investigated systematically, it was found that the isothermal data were well fitted to Langmuir model, and the kinetic data were well suitable to pseudo-second-order kinetics model.

show abstract

Nickel nanoparticles highly dispersed with an ordered distribution in MCM-41 matrix as an efficient catalyst for hydrodechlorination of chlorobenzene

Cited by 27 publications

References 39 publications

Synthesis, Characterization and Catalytic Performance of Well-ordered Crystalline Heteroatom Mesoporous MCM-41

Synthesis, Characterization and Catalytic Performance of Well-ordered Crystalline Heteroatom Mesoporous MCM-41

Synthesis, Characterization and Catalytic Performance of Well-Ordered Crystalline Heteroatom Mesoporous MCM-41

Facile preparation of mesoporous silica/nano zero-valent iron composite for Pb(II) removal from aqueous solution

Contact Info

Product

Resources

About