We present results from BeppoSAX observations of 10 low redshift quasars .
The quasars are part of the Laor et al .
( 1997 ) sample of 23 optically selected PG quasars with redshift < 0.4 and low Galactic absorption along the line of sight .
Significant spectral curvature is detected for the 6 quasars with the highest signal to noise ratio in their low energy spectra .
The average curvature can be parameterized as a flattening of the underlying power law by \Delta \alpha \sim 0.5 above \sim 1 keV .
We find that quasars with a steeper soft X-ray ( 0.1–2 keV ) spectrum tend to be steeper also at higher ( 2–10 keV ) energies .
The distribution of the best fit 2–10 keV slopes is similar to that found for other radio-quiet AGN and characterized by a large dispersion around the mean : \alpha _ { E } \simeq 1.0 \pm 0.3 .
Iron K _ { \alpha } lines are detected in 4 quasars .
In the narrow–line quasar PG 1115 + 407 , the rest frame line energy ( 6.69 \pm 0.11 keV ) and equivalent width ( 580 \pm 280 eV ) are consistent with those found in a few low redshift narrow–line Seyfert 1 galaxies ( NLSy1 ) .
This , together with the similarity of the 0.1–10 keV X-ray continuum , suggests that this quasar is the higher redshift and luminosity analog of a NLSy1 .
In the broad line quasar PG 0947 + 396 , the rest-frame line energy suggests fluorescence from cold iron .
The line equivalent width ( > 400 eV ) is however about 2–3 times higher than that usually found in Seyfert 1 galaxies .
The high energy power-law slopes and the iron line emission properties seem to be unrelated to the X–ray luminosity .