Qualitative and quantitative analysis of acid site distribution,and acidity and acid strength of B and L acids can be carried out well by means of newly exploited ~(31)P NMR method.

• 新发展起来的31P核磁共振技术可较好地实现B酸和L酸的酸中心分布、酸量及酸强度的定性和定量分析。