Microcrystalline cellulose (MCC) is a bio-based material obtained from purified and partially depolymerized cellulose. The need for cheaper sources of MCC has led to the exploration of other lignocellulosic material based on agricultural residues. Hence, in this study, olive stones were chosen as olive industry produces 37,500 tons of olive-stone waste every year. Microcrystalline cellulose was prepared by acid hydrolysis using hydrochloric or sulfuric acids then bleached. Characterization of the prepared MCC was carried out using attenuated reflectance Fourier transform infrared (ATR-FTIR) spectroscopy and thermal gravimetric analysis (TGA). The crystal structure was studied using XRD. The surfaces of prepared samples were investigated by field emission scanning electron microscope (SEM). In addition, surface area and pore size, as well as particle size distribution of the prepared samples, were measured using nitrogen absorption isotherm and dynamic laser light scattering, respectively. The particle size of samples prepared with sulfuric acid was smaller and therefore the surface area was higher than in case of samples prepared using hydrochloric acid. However, the hydrochloric acid prepared MCC had higher thermal stability than the other sample prepared using sulfuric acid. The properties of prepared MCCs were compared to the commercially available MCC (Avicell PH 101); the results showed good agreement in most properties between olive stone MCC and the commercial one.

微晶纤维素（MCC）是从纯化和部分解聚的纤维素中获得的生物基材料。对廉价的MCC来源的需求已导致对基于农业残留物的其他木质纤维素材料的探索。因此，在这项研究中，选择橄榄石是因为橄榄产业每年生产37,500吨橄榄石废料。通过使用盐酸或硫酸进行酸水解来制备微晶纤维素，然后对其进行漂白。使用衰减反射傅里叶变换红外光谱（ATR-FTIR）光谱和热重分析（TGA）对制得的MCC进行表征。使用XRD研究晶体结构。通过场发射扫描电子显微镜（SEM）研究制备的样品的表面。另外，表面积和孔径 分别使用氮气吸收等温线和动态激光散射对制备样品的粒度分布进行了测量。与使用盐酸制备的样品相比，用硫酸制备的样品的粒径较小，因此表面积较大。但是，盐酸制得的MCC比使用硫酸制得的其他样品具有更高的热稳定性。将制备的MCC的性能与市售的MCC（Avicell PH 101）进行比较；结果表明，橄榄石MCC和商用MCC在大多数性能上都有很好的一致性。与使用盐酸制备的样品相比，用硫酸制备的样品的粒径较小，因此表面积较大。但是，盐酸制得的MCC比使用硫酸制得的其他样品具有更高的热稳定性。将制备的MCC的性能与市售的MCC（Avicell PH 101）进行比较；结果表明，橄榄石MCC和商用MCC在大多数性能上都有很好的一致性。与使用盐酸制备的样品相比，用硫酸制备的样品的粒径较小，因此表面积较大。但是，盐酸制得的MCC比使用硫酸制得的其他样品具有更高的热稳定性。将制备的MCC的性能与市售的MCC（Avicell PH 101）进行比较；结果表明，橄榄石MCC和商用MCC在大多数性能上都有很好的一致性。