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文中过渡词和衔接词使用较少；作者词汇基本功不错，建议今后多用高级词汇；句法方面做得很棒，但是从句不多。
Where m is the mass of SO added to the autoclave; mSO and mSC are the mass of SO and SC in the mixture after reaction; 120 and 164 are the molecular weights (in g/mol) of SO and SC, respectively. 2.5 Measurements IR spectra were measured on an EQUINOX 55 spectrometer in the range from 4000 to 500 cm–1. The solid samples were grounded with dried KBr powder, and compressed into a disc prior to analysis. XRD measurements were performed on a D8 ADVANCE diffractometer with Cu Kα radiation at 40 kV and 40 mA in the range of 2θ from 0 to 10o with scanning rate of 2o/min and in the range of 2θ from 10 to 80o with scanning rate of 5o/min, respectively. Nitrogen adsorption-desorption isotherms were measured at liquid nitrogen temperature using a ASAP 2020 analyzer, and the samples were degassed at 100 oC for 3 h before measuring. Specific surface areas were calculated using the BET model. The X-ray photoelectron spectroscopy (XPS) spectra were recorded on a Kratos AXIS-ULTRA DLD-600W spectrometer with Mg Kα radiation (1253.6 eV) operated at 12 kV and 10 mA. The energy scale was calibrated and corrected using the C1s (284.9eV) line as the binding energy reference. The particle diameter was measured on a BT-90 Nanometer laser particle size analyzer with a 20 mW fiber laser and 90 o scattering angle in distillation water for 300 s. The Cu and Br loadings were determined by AAS on a Perkin-Elemer Analyst 300 using acetylene flame and IC on a Thermofisher ICS-2100 spectrometer with a heated conductivity detector, respectively. The quantitative analysis of the reaction products was performed on a GC2020 gas chromatograph equipped with HP-5 capillary column (30 m × 0.25 mm × 0.25 mm, cross linked methylsiloxane) and flame ionic detector. GC-MS analyses were performed using Agilent 7890A/5975C equipped with HP-5 capillary column and EI source. The detection was performed in the scan mode from m/z of 20 to 400. 1.0 mL/min helium was used as the carrier gas. The ionization voltage and source temperature were 70 eV and 230 ºC, respectively. 1H-NMR spectra of the crude products were recorded on an AscendTM 600 spectrometer (1H, 600 MHz) using CDCl3 as solvent.
