Table 2 Comparison of properties of M1 prepared by the new and standard methods

From: Design and synthesis of highly active MoVTeNb-oxides for ethane oxidative dehydrogenation

Elemental compositiona (nominal formulab)

Synthesis method

Thermal treatment

Surface areac/m² g−1

M1 phase content/wt. %

Crystallinity/wt. %

MoV0.30Te0.05Nb0.05Ox (MoV0.30Te0.05Nb0.05Ox)

This work

80 °C, air

59

77

78

MoV0.30Te0.05Nb0.05Ox (MoV0.30Te0.05Nb0.05Ox)

This work

400 °C, N2

50

79

82

MoV0.31Te0.20Nb0.17Ox (MoV0.40Te0.10Nb0.10Ox)

Standard19

80 °C, air

61

n.d.d

n.d.d

MoV0.30Te0.06Nb0.08Ox (MoV0.40Te0.10Nb0.10Ox)

Standard19

650 °C, N2

13

97

100

  1. aElemental analysis by inductively coupled plasma optical emission spectrometry (ICP-OES)
  2. bStoichiometry of metals subjected to hydrothermal synthesis
  3. cCalculated according to Brunnauer-Emmett-Teller (BET) method. Samples were degasified at 250 °C prior N2 isotherm
  4. dDiffractogram shows only a single broad reflection around 2Θ = 21.4° matching the {001}-plane reflections of e.g., M1, M2, and M5O14 phases. Rietveld refinement of the diffractogram was not possible due to missing long-range order in the sample
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