镍的粒子粒径=1.17/分散度d铜的金属颗粒粒径=1/分散度d(applied catalysis b: environmental, volume 101, issues 3–4, 14 january 2011, pages 431-440;applied catalysis a: general, volume 403, issues 1–2, 22 august 2011, pages 173-182;journal of catalysis, in press, corrected proof, available online 15 october 2012)